"BBCode in RichTextLabel" reference for "lang" shows wrong example ending

[SakulFlee]

Your Godot version:
4.2.1

Issue description:
The reference table for the lang tag has a wrong closing tag.
It starts with [lang (...)], but ends with [/color].

URL to the documentation page:
BBCode in RichTextLabel - Reference

If you know how to fix the issue you are reporting please
consider opening a pull request. We provide a tutorial on
using git here: https://docs.godotengine.org/en/stable/community/contributing/pr_workflow.html,
writing documentation at https://docs.godotengine.org/en/stable/community/contributing/docs_writing_guidelines.html
and contributing to the class reference here: https://docs.godotengine.org/en/stable/community/contributing/updating_the_class_reference.html