Deprecate Chat agent executor & Function Calling Executor in Docs (#392)

docs/docs/reference/graphs.md

@@ -1,5 +1,7 @@
 # Graph Definitions
 
+Graphs are the core abstraction of LangGraph. Each [StateGraph](#langgraph.graph.StateGraph) implementation is used to create graph workflows. Once compiled, you can run the [CompiledGraph](#compiledgraph) to run the application.
+
 ::: langgraph.graph
     handler: python
 
@@ -7,9 +9,6 @@
 
 ::: langgraph.graph.graph.CompiledGraph
     handler: python
-    members:
-      - get_graph
-      - invoke
 
 
 ## MessageGraph
@@ -19,4 +18,4 @@
 
 ## add_messages
 
-::: ::: langgraph.graph.message.add_messages
+::: langgraph.graph.message.add_messages