doc: shortened reference in uix/scatter.py

Author: Zen-CODE

kivy/uix/scatter.py

@@ -12,8 +12,8 @@
 properties. That specific behavior makes the scatter unique, but there are some
 advantages / constraints that you should consider:
 
-#. The children are positioned relative to the scatter similar to a
-   RelativeLayout (see :mod:`~kivy.uix.relativelayout`). So when dragging the
+#. The children are positioned relative to the scatter similarly to a
+   :mod:`~kivy.uix.relativelayout.RelativeLayout`. So when dragging the
    scatter, the position of the children don't change, only the position of
    the scatter does.
 #. The scatter size has no impact on the size of it's children.