[docs] multi-turn tool calling

[stevhliu]

adds docs for #45485:

• example of multi-turn tool calling and update its no longer limited to the Qwen model family
• light polish (e.g. fix anchor links that have the same titles)

[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.

[SunMarc]

Thanks, left a couple of comments !

[SunMarc]

Thanks !