Update documentation/hql/create/addN.mdx

Author: mintlify[bot]

documentation/hql/create/addN.mdx

@@ -312,3 +312,10 @@ curl -X POST \
   -d '{}'
 ```
 </CodeGroup>
+
+## Related operations
+
+- [Select nodes](/documentation/hql/select/selectN) - Query existing nodes
+- [Create edges](/documentation/hql/create/addE) - Connect nodes with relationships
+- [Update nodes](/documentation/hql/updating) - Modify node properties
+- [Schema definitions](/documentation/hql/schema/schema-definition) - Define node types