Change Depth documentation toctree

Author: rbeucher

docs/development/docs_generator/UWGeodynamics.rst

@@ -7,7 +7,7 @@ Welcome to UWGeodynamics's documentation!
 
 .. toctree::
    :hidden:
-   :maxdepth: 1
+   :maxdepth: 2
 
    User Guide <UWGeoUserGuide>