wxGUI: toolbox cosmetics, separator added

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@59574 15284696-431f-4ddb-bdfa-cd5b030d7da7

gui/wxpython/xml/toolboxes.xml

@@ -860,6 +860,7 @@
       <module-item name="r.water.outlet">
         <label>Watershed basin creation</label>
       </module-item>
+      <separator/>
       <module-item name="r.stream.channel">
         <label>Stream channel characteristics</label>
       </module-item>