Clarify documentation of Camera3D.get_camera_transform()

doc/classes/Camera.xml

@@ -30,7 +30,7 @@
 			<return type="Transform">
 			</return>
 			<description>
-				Gets the camera transform. Subclassed cameras such as [InterpolatedCamera] may provide different transforms than the [Node] transform.
+				Returns the transform of the camera plus the vertical ([member v_offset]) and horizontal ([member h_offset]) offsets; and any other adjustments made to the position and orientation of the camera by subclassed cameras such as [ClippedCamera], [InterpolatedCamera] and [ARVRCamera].
 			</description>
 		</method>
 		<method name="get_cull_mask_bit" qualifiers="const">