added new diagram from GNN area

Author: acostadon

docs/cugraph-docs/source/_static/cugraph-pyg-stack.png

@@ -2,10 +2,21 @@
 Graph Neural Network Support
 ============================
 
-**cuGraph-DGL has been removed as of release 25.06.** We recommend migrating to 
+**cuGraph-DGL has been removed from cuGraph GNN as of release 25.06.** We recommend migrating to 
 cuGraph-PyG, which offers the same functionality along with additional features like support for heterogeneous sampling and a unified API. 
 The cuGraph team is not planning any further work in the DGL ecosystem going forward.
 
+----
+
+The cuGraph GNN stack
+
+.. image:: ../../_static/cugraph-pyg-stack.png
+   :alt: The cuGraph-
+   :width: 400px
+   :align: center
+
+----
+
 Here is a talk that explains `Training GNNs at Internet Scale using cuGraph and WholeGraph <https://www.youtube.com/watch?v=rS-bcWm3jQo&t=2762s>`_
 
 

docs/cugraph-docs/source/graph_support/gnn_support.rst

@@ -2,7 +2,7 @@
 *** NOTICE ***
 ==============
 
-**cuGraph-DGL has been removed as of release 25.06.** We recommend migrating to 
+**cuGraph-DGL has been removed from cuGraph GNN as of release 25.06.** We recommend migrating to 
 cuGraph-PyG, which offers the same functionality along with additional features like support for heterogeneous sampling and a unified API. 
 The cuGraph team is not planning any further work in the DGL ecosystem going forward.