This follows the documentation writing guidelines, specifically
the "When to refer to a specific Godot version" section.
This also removes warning blocks for a known issue that was resolved in Godot 4.5.
As mentioned here https://github.com/godotengine/godot-docs/issues/6716
add/remove_node3d_gizmo_plugin is the wrong method name. But i'm not sure if it intentionally changed to add/remove_node_3d_gizmo_plugin.
Here are the adjustments anway in case it is intentional and going to stay that way.