Update index.mdx (#694)

More prominently promoting "Eval on the Hub" features ie. those features described in https://huggingface.co/docs/hub/en/model-cards#evaluation-results

Co-authored-by: burtenshaw <ben.burtenshaw@gmail.com>

Author: meg-huggingface

docs/source/index.mdx

@@ -4,6 +4,13 @@
     <br>
 </p>
 
+<Tip>
+For more recent evaluation approaches that are popular on the Hugging Face Hub that are currently more actively maintained, check out [LightEval](https://github.com/huggingface/lighteval).
+
+For information on reporting results, see details on [the Model Card Evaluation Results metadata](https://huggingface.co/docs/hub/en/model-cards#evaluation-results).
+</Tip>
+
+
 # 🤗 Evaluate
 
 A library for easily evaluating machine learning models and datasets.
@@ -12,8 +19,6 @@ With a single line of code, you get access to dozens of evaluation methods for d
 
 Visit the 🤗 Evaluate [organization](https://huggingface.co/evaluate-metric) for a full list of available metrics. Each metric has a dedicated Space with an interactive demo for how to use the metric, and a documentation card detailing the metrics limitations and usage.
 
-> **Tip:** For more recent evaluation approaches, for example for evaluating LLMs, we recommend our newer and more actively maintained library [LightEval](https://github.com/huggingface/lighteval).
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