💡 Replace <Tip> with new markdown syntax

[qgallouedec]

See internal message: https://huggingface.slack.com/archives/C021H1P1HKR/p1758803097814219

[HuggingFaceDocBuilderDev]

The docs for this PR live here. All of your documentation changes will be reflected on that endpoint. The docs are available until 30 days after the last update.

[albertvillanova]

Thanks!

For context, using > [!TIP] or > [!WARNING] is the recommended practice now.

[sergiopaniego]

thanks!
Note: if a TIP/WARNING starts with a link on the first line, it won’t render correctly:

> [!TIP]
> [Part I: Tricks or Traps? A Deep Dive into RL for LLM Reasoning (Lite PPO)](https://huggingface.co/papers/2508.08221) ...

Solution: add a blank line after the TIP/WARNING marker:

> [!TIP]
> 
> [Part I: Tricks or Traps? A Deep Dive into RL for LLM Reasoning (Lite PPO)](https://huggingface.co/papers/2508.08221)