Update README.md

README.md

@@ -87,7 +87,7 @@ Refer to the [original paper](https://openreview.net/forum?id=hhKA5k0oVy5) for a
 
 The following table taken from the original paper lists the languages supported by the VAT test sets, for a total of 70 language pairs:
 
-| :left_right_arrow: | `wmt16` | `wmt17` | `wmt18` | `wmt19` | `wmt20` |
+| ↔️ | `wmt16` | `wmt17` | `wmt18` | `wmt19` | `wmt20` |
 |----------:|:--------|:--------|:--------|--------:|--------:|
 | `xx_en` | `cs`,`de`,`fi`, <br /> `ro`,`ru`,`tr` | `cs`,`de`,`fi`,`lv`, <br /> `ru`,`tr`,`zh` | `cs`,`de`,`et`,`fi`, <br /> `ru`,`tr`,`zh` | `de`,`fi`,`gu`, <br /> `kk`,`lt`,`ru`,`zh` | `cs`,`de`,`iu`,`ja`,`km`, <br /> `pl`,`ps`,`ru`,`ta`,`zh`|
 | `en_xx` | `ru` | `cs`,`de`,`fi`, <br /> `lv`,`ru`,`tr`,`zh` | `cs`,`de`,`et`,`fi`, <br /> `ru`,`tr`,`zh` | `cs`,`de`,`fi`,`gu`, <br /> `kk`,`lt`,`ru`,`zh` | `cs`,`de`,`ja`,`pl`, <br /> `ru`,`ta`,`zh`|