Update the print message for chunked_dataset in process.mdx
Update documentation to align with `Dataset.__repr__` change after #423
The docs for this PR live [here](https://moon-ci-docs.huggingface.co/docs/datasets/pr_6693). All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update. <details>
<summary>Show benchmarks</summary>

PyArrow==8.0.0

<details>
<summary>Show updated benchmarks!</summary>

### Benchmark: benchmark_array_xd.json

| metric | read_batch_formatted_as_numpy after write_array2d | read_batch_formatted_as_numpy after write_flattened_sequence | read_batch_formatted_as_numpy after write_nested_sequence | read_batch_unformated after write_array2d | read_batch_unformated after write_flattened_sequence | read_batch_unformated after write_nested_sequence | read_col_formatted_as_numpy after write_array2d | read_col_formatted_as_numpy after write_flattened_sequence | read_col_formatted_as_numpy after write_nested_sequence | read_col_unformated after write_array2d | read_col_unformated after write_flattened_sequence | read_col_unformated after write_nested_sequence | read_formatted_as_numpy after write_array2d | read_formatted_as_numpy after write_flattened_sequence | read_formatted_as_numpy after write_nested_sequence | read_unformated after write_array2d | read_unformated after write_flattened_sequence | read_unformated after write_nested_sequence | write_array2d | write_flattened_sequence | write_nested_sequence |
|--------|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| new / old (diff) | 0.005069 / 0.011353 (-0.006284) | 0.003682 / 0.011008 (-0.007326) | 0.063733 / 0.038508 (0.025225) | 0.030377 / 0.023109 (0.007268) | 0.242962 / 0.275898 (-0.032936) | 0.262865 / 0.323480 (-0.060615) | 0.004760 / 0.007986 (-0.003225) | 0.002772 / 0.004328 (-0.001557) | 0.049094 / 0.004250 (0.044843) | 0.041093 / 0.037052 (0.004041) | 0.260423 / 0.258489 (0.001934) | 0.283908 / 0.293841 (-0.009933) | 0.027409 / 0.128546 (-0.101138) | 0.010548 / 0.075646 (-0.065098) | 0.208637 / 0.419271 (-0.210634) | 0.035386 / 0.043533 (-0.008147) | 0.242352 / 0.255139 (-0.012787) | 0.264201 / 0.283200 (-0.018999) | 0.017822 / 0.141683 (-0.123860) | 1.140792 / 1.452155 (-0.311363) | 1.166782 / 1.492716 (-0.325934) |

### Benchmark: benchmark_getitem\_100B.json

| metric | get_batch_of\_1024\_random_rows | get_batch_of\_1024\_rows | get_first_row | get_last_row |
|--------|---|---|---|---|
| new / old (diff) | 0.094727 / 0.018006 (0.076720) | 0.308548 / 0.000490 (0.308059) | 0.000213 / 0.000200 (0.000013) | 0.000052 / 0.000054 (-0.000003) |

### Benchmark: benchmark_indices_mapping.json

| metric | select | shard | shuffle | sort | train_test_split |
|--------|---|---|---|---|---|
| new / old (diff) | 0.018106 / 0.037411 (-0.019305) | 0.062057 / 0.014526 (0.047531) | 0.073821 / 0.176557 (-0.102735) | 0.121269 / 0.737135 (-0.615867) | 0.074062 / 0.296338 (-0.222277) |

### Benchmark: benchmark_iterating.json

| metric | read 5000 | read 50000 | read_batch 50000 10 | read_batch 50000 100 | read_batch 50000 1000 | read_formatted numpy 5000 | read_formatted pandas 5000 | read_formatted tensorflow 5000 | read_formatted torch 5000 | read_formatted_batch numpy 5000 10 | read_formatted_batch numpy 5000 1000 | shuffled read 5000 | shuffled read 50000 | shuffled read_batch 50000 10 | shuffled read_batch 50000 100 | shuffled read_batch 50000 1000 | shuffled read_formatted numpy 5000 | shuffled read_formatted_batch numpy 5000 10 | shuffled read_formatted_batch numpy 5000 1000 |
|--------|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| new / old (diff) | 0.282978 / 0.215209 (0.067768) | 2.788626 / 2.077655 (0.710971) | 1.479756 / 1.504120 (-0.024364) | 1.360620 / 1.541195 (-0.180575) | 1.363996 / 1.468490 (-0.104494) | 0.571646 / 4.584777 (-4.013131) | 2.430630 / 3.745712 (-1.315083) | 2.783909 / 5.269862 (-2.485953) | 1.744617 / 4.565676 (-2.821060) | 0.062771 / 0.424275 (-0.361504) | 0.004978 / 0.007607 (-0.002629) | 0.347929 / 0.226044 (0.121884) | 3.368837 / 2.268929 (1.099908) | 1.855635 / 55.444624 (-53.588990) | 1.581555 / 6.876477 (-5.294922) | 1.589888 / 2.142072 (-0.552184) | 0.655821 / 4.805227 (-4.149406) | 0.118990 / 6.500664 (-6.381674) | 0.042191 / 0.075469 (-0.033278) |

### Benchmark: benchmark_map_filter.json

| metric | filter | map fast-tokenizer batched | map identity | map identity batched | map no-op batched | map no-op batched numpy | map no-op batched pandas | map no-op batched pytorch | map no-op batched tensorflow |
|--------|---|---|---|---|---|---|---|---|---|
| new / old (diff) | 0.991099 / 1.841788 (-0.850688) | 11.627919 / 8.074308 (3.553611) | 9.554180 / 10.191392 (-0.637212) | 0.140541 / 0.680424 (-0.539882) | 0.014264 / 0.534201 (-0.519937) | 0.288465 / 0.579283 (-0.290818) | 0.266400 / 0.434364 (-0.167964) | 0.324400 / 0.540337 (-0.215938) | 0.423158 / 1.386936 (-0.963778) |

</details>
PyArrow==latest

<details>
<summary>Show updated benchmarks!</summary>

### Benchmark: benchmark_array_xd.json

| metric | read_batch_formatted_as_numpy after write_array2d | read_batch_formatted_as_numpy after write_flattened_sequence | read_batch_formatted_as_numpy after write_nested_sequence | read_batch_unformated after write_array2d | read_batch_unformated after write_flattened_sequence | read_batch_unformated after write_nested_sequence | read_col_formatted_as_numpy after write_array2d | read_col_formatted_as_numpy after write_flattened_sequence | read_col_formatted_as_numpy after write_nested_sequence | read_col_unformated after write_array2d | read_col_unformated after write_flattened_sequence | read_col_unformated after write_nested_sequence | read_formatted_as_numpy after write_array2d | read_formatted_as_numpy after write_flattened_sequence | read_formatted_as_numpy after write_nested_sequence | read_unformated after write_array2d | read_unformated after write_flattened_sequence | read_unformated after write_nested_sequence | write_array2d | write_flattened_sequence | write_nested_sequence |
|--------|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| new / old (diff) | 0.005588 / 0.011353 (-0.005765) | 0.003784 / 0.011008 (-0.007224) | 0.049961 / 0.038508 (0.011453) | 0.031215 / 0.023109 (0.008105) | 0.280859 / 0.275898 (0.004961) | 0.306416 / 0.323480 (-0.017063) | 0.004310 / 0.007986 (-0.003676) | 0.002884 / 0.004328 (-0.001445) | 0.049662 / 0.004250 (0.045412) | 0.046611 / 0.037052 (0.009559) | 0.293353 / 0.258489 (0.034864) | 0.327839 / 0.293841 (0.033998) | 0.050784 / 0.128546 (-0.077763) | 0.010890 / 0.075646 (-0.064757) | 0.059612 / 0.419271 (-0.359659) | 0.033175 / 0.043533 (-0.010358) | 0.281085 / 0.255139 (0.025946) | 0.302746 / 0.283200 (0.019547) | 0.019201 / 0.141683 (-0.122481) | 1.126722 / 1.452155 (-0.325433) | 1.225678 / 1.492716 (-0.267038) |

### Benchmark: benchmark_getitem\_100B.json

| metric | get_batch_of\_1024\_random_rows | get_batch_of\_1024\_rows | get_first_row | get_last_row |
|--------|---|---|---|---|
| new / old (diff) | 0.094335 / 0.018006 (0.076329) | 0.304774 / 0.000490 (0.304285) | 0.000207 / 0.000200 (0.000007) | 0.000050 / 0.000054 (-0.000005) |

### Benchmark: benchmark_indices_mapping.json

| metric | select | shard | shuffle | sort | train_test_split |
|--------|---|---|---|---|---|
| new / old (diff) | 0.021648 / 0.037411 (-0.015763) | 0.077920 / 0.014526 (0.063394) | 0.087125 / 0.176557 (-0.089432) | 0.125481 / 0.737135 (-0.611654) | 0.089415 / 0.296338 (-0.206924) |

### Benchmark: benchmark_iterating.json

| metric | read 5000 | read 50000 | read_batch 50000 10 | read_batch 50000 100 | read_batch 50000 1000 | read_formatted numpy 5000 | read_formatted pandas 5000 | read_formatted tensorflow 5000 | read_formatted torch 5000 | read_formatted_batch numpy 5000 10 | read_formatted_batch numpy 5000 1000 | shuffled read 5000 | shuffled read 50000 | shuffled read_batch 50000 10 | shuffled read_batch 50000 100 | shuffled read_batch 50000 1000 | shuffled read_formatted numpy 5000 | shuffled read_formatted_batch numpy 5000 10 | shuffled read_formatted_batch numpy 5000 1000 |
|--------|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| new / old (diff) | 0.304955 / 0.215209 (0.089746) | 2.992587 / 2.077655 (0.914932) | 1.654609 / 1.504120 (0.150490) | 1.509114 / 1.541195 (-0.032081) | 1.530906 / 1.468490 (0.062416) | 0.572092 / 4.584777 (-4.012685) | 2.477902 / 3.745712 (-1.267810) | 2.731363 / 5.269862 (-2.538498) | 1.750000 / 4.565676 (-2.815677) | 0.063662 / 0.424275 (-0.360613) | 0.005008 / 0.007607 (-0.002600) | 0.353066 / 0.226044 (0.127022) | 3.528309 / 2.268929 (1.259380) | 2.009238 / 55.444624 (-53.435387) | 1.717792 / 6.876477 (-5.158685) | 1.861699 / 2.142072 (-0.280373) | 0.667392 / 4.805227 (-4.137835) | 0.119197 / 6.500664 (-6.381467) | 0.041131 / 0.075469 (-0.034338) |

### Benchmark: benchmark_map_filter.json

| metric | filter | map fast-tokenizer batched | map identity | map identity batched | map no-op batched | map no-op batched numpy | map no-op batched pandas | map no-op batched pytorch | map no-op batched tensorflow |
|--------|---|---|---|---|---|---|---|---|---|
| new / old (diff) | 1.032182 / 1.841788 (-0.809605) | 12.042613 / 8.074308 (3.968305) | 10.256293 / 10.191392 (0.064901) | 0.141180 / 0.680424 (-0.539244) | 0.015005 / 0.534201 (-0.519196) | 0.290081 / 0.579283 (-0.289202) | 0.281081 / 0.434364 (-0.153283) | 0.331425 / 0.540337 (-0.208912) | 0.418674 / 1.386936 (-0.968262) |

</details>
</details>

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