Documentation for XRController3D is out of date

**Your Godot version:**
v4.0.2.stable.official [7a0977ce2]

**Issue description:**
Its as simple as the title says, the documentation is just out of date. The page references the old paradigm of each tracker having an integer ID, but neither the editor nor the nonexistent properties section makes any reference to it.

**URL to the documentation page:** https://docs.godotengine.org/en/latest/classes/class_xrcontroller3d.html