Document llms.txt description truncation

[mintlify-development]

Summary

• Added documentation explaining that llms.txt descriptions are truncated to 300 characters
• Multi-paragraph descriptions use only the first paragraph
• Longer descriptions are cut off with an ellipsis (…)

Triggered by mintlify/server#4008 which truncates llms.txt descriptions to improve file size and readability.

---

Note

Low Risk
Low risk documentation-only change; no code paths or data handling are modified.

Overview
Documents llms.txt generation behavior across EN/ES/FR/ZH docs: page description text is truncated to 300 characters, only the first paragraph is used, and longer text is ended with an ellipsis (…).

^{Written by Cursor Bugbot for commit 8deb3f1. This will update automatically on new commits. Configure here.}