Typo in Transform2D "Built-in types" description

**Your Godot version:**
4.7.1 mono

**Issue description:**
Small typo in the Transform2D description. It says 3x2 matrix when it should be 2x3.
Located in Manual > Scripting > GDScript > GDScript Reference > Built-in types

**URL to the documentation page:**
https://docs.godotengine.org/en/stable/tutorials/scripting/gdscript/gdscript_basics.html#built-in-types

Open the linked documentation page and navigate to Manual > Scripting > GDScript > GDScript Reference > Built-in types. Locate the Transform2D description and verify the matrix dimensions against the issue. Done means the incorrect dimension is corrected and the documentation renders without introducing unrelated changes.

Written by the indexing model from the issue text.