Increase max tree depth to 4 (#597)

Rbiessy · web-flow · commit 5cfeddc2bfbd · 2024-10-22T09:45:36.000-04:00
diff --git a/source/index.rst b/source/index.rst
@@ -16,7 +16,7 @@ for creating parallel applications:
 
 .. toctree::
    :hidden:
-   :maxdepth: 3
+   :maxdepth: 4
 
    introduction
    architecture
