Update README.md

README.md

@@ -15,3 +15,5 @@ We're behind the:
 - [lighteval](https://github.com/huggingface/lighteval) LLM evaluation suite, fast and filled with the SOTA benchmarks you might want  
 - [evaluation guidebook](https://github.com/huggingface/evaluation-guidebook), your reference for LLM evals 
 - [leaderboards on the hub](https://huggingface.co/blog?tag=leaderboard) initiative, to encourage people to build more leaderboards in the open for more reproducible evaluation. You'll find some doc [here](https://huggingface.co/docs/leaderboards/index) to build your own!
+
+We're not behind the [evaluate metrics guide](https://huggingface.co/evaluate-metric) but if you want to understand metrics better we really recommend checking it out!