Update README.md (huggingface#703)

* Update README.md

* Update README.md

Author: NathanHB

README.md

@@ -21,7 +21,7 @@
 
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-**Documentation**: <a href="https://huggingface.co/docs/lighteval/index" target="_blank">Lighteval's Wiki</a>
+**Documentation**: <a href="https://huggingface.co/docs/lighteval/main/en/index" target="_blank">HF's doc</a>
 
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