docs: set HuggingFaceEndpoint task for Mixtral examples

[Smile232323]

Summary

• set for HuggingFaceEndpoint in LangChain and Visual Grounding notebooks
• ensures Mixtral-8x7B-Instruct uses the correct Hugging Face inference task

Testing

• not run (docs-only change)

Refs #2080

[github-actions]

❌ DCO Check Failed

Hi @Smile232323, your pull request has failed the Developer Certificate of Origin (DCO) check.

This repository supports remediation commits, so you can fix this without rewriting history — but you must follow the required message format.

---

🛠 Quick Fix: Add a remediation commit

Run this command:

git commit --allow-empty -s -m "DCO Remediation Commit for Kaiiiiiiiii <2761362118@qq.com>

I, Kaiiiiiiiii <2761362118@qq.com>, hereby add my Signed-off-by to this commit: 1288c1fadd06a7ddaf7e205d09325afe3a9bb2d0"
git push

---

🔧 Advanced: Sign off each commit directly

For the latest commit:

git commit --amend --signoff
git push --force-with-lease

For multiple commits:

git rebase --signoff origin/main
git push --force-with-lease

More info: DCO check report

[dosubot]

Related Documentation

Checked 8 published document(s) in 1 knowledge base(s). No updates required.

^{How did I do? Any feedback?}  

[mergify]

Merge Protections

Your pull request matches the following merge protections and will not be merged until they are valid.

🟢 Enforce conventional commit

Wonderful, this rule succeeded.

Make sure that we follow https://www.conventionalcommits.org/en/v1.0.0/

• title ~= ^(fix|feat|docs|style|refactor|perf|test|build|ci|chore|revert)(?:\(.+\))?(!)?:

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

📢 Thoughts on this report? Let us know!