[Docs] Update edit links (#567)

docs/mkdocs.yml

@@ -2,6 +2,7 @@ site_name: LangGraph
 site_description: Build language agents as graphs
 site_url: https://langchain-ai.github.io/langgraph/
 repo_url: https://github.com/langchain-ai/langgraph
+edit_uri: edit/main/docs/docs/
 theme:
   name: material
   custom_dir: overrides
@@ -84,6 +85,7 @@ plugins:
   - git-committers:
       repository: langchain-ai/langgraph
       branch: main
+      docs_path: docs/docs/
       token: !ENV ["MKDOCS_GIT_COMMITTERS_APIKEY"]
   # TODO: Add minify plugin once it works alright with code block copying
   # - minify: