load_dataset fails for JSON in windows
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Hi! 

You need to pass an input json file explicitly as `data_files` to `load_dataset` to avoid this error:
```python
 ds = load_dataset("json", data_files=args.input_json)
```

 Thanks it worked!
### Describe the bug

Steps:
1. Created a dataset in a Linux VM and created a small sample using dataset.to_json() method.
2. Downloaded the JSON file to my local Windows machine for working and saved in say - r"C:\Users\name\file.json"
3. I am reading the file in my local PyCharm - the location of python file is different than the location of the JSON. 
4. When I read using load_dataset("json",args.input_json), it throws and error from builder.py. 
raise InvalidConfigName(
                    f"Bad characters from black list '{invalid_windows_characters}' found in '{self.name}'. "
                    f"They could create issues when creating a directory for this config on Windows filesystem."
6. When I bring the data to the current directory, it works fine. 

### Steps to reproduce the bug

Steps:
1. Created a dataset in a Linux VM and created a small sample using dataset.to_json() method.
2. Downloaded the JSON file to my local Windows machine for working and saved in say - r"C:\Users\name\file.json"
3. I am reading the file in my local PyCharm - the location of python file is different than the location of the JSON. 
4. When I read using load_dataset("json",args.input_json), it throws and error from builder.py. 
raise InvalidConfigName(
                    f"Bad characters from black list '{invalid_windows_characters}' found in '{self.name}'. "
                    f"They could create issues when creating a directory for this config on Windows filesystem."
6. When I bring the data to the current directory, it works fine. 

### Expected behavior

Should be able to read from a path different than current directory in Windows machine.

### Environment info

datasets version: 2.3.1
python version: 3.8
Windows OS
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