Code block broken for Class constructor section

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Your Godot version: 4.5-stable

Issue description: Code block broken for Class constructor section

URL to the documentation page: https://docs.godotengine.org/en/stable/tutorials/scripting/gdscript/gdscript_basics.html#class-constructor

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://contributing.godotengine.org/en/latest/organization/pull_requests/creating_pull_requests.html,
writing documentation at https://contributing.godotengine.org/en/latest/documentation/guidelines/index.html
and contributing to the class reference here: https://contributing.godotengine.org/en/latest/documentation/class_reference.html

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Seens to be fixed by #11491