DOC: Fix missing Neptune Analytics mention on doc (#3264)

Signed-off-by: Andy Kwok <[email protected]>
Co-authored-by: Andrew Carbonetto <[email protected]>

Author: andy-k-improving

docs/open-source/graph_memory/overview.mdx

@@ -50,8 +50,8 @@ allowfullscreen
 ## Initialize Graph Memory
 
 To initialize Graph Memory you'll need to set up your configuration with graph
-store providers. Currently, we support [Neo4j](#initialize-neo4j) and
-[Memgraph](#initialize-memgraph) as graph store providers. 
+store providers. Currently, we support [Neo4j](#initialize-neo4j), [Memgraph](#initialize-memgraph),
+and [Neptune Analytics](#initialize-neptune-analytics) as graph store providers.
 
 
 ### Initialize Neo4j