message: Simplify docgen script per code review.
diff: @@ -204,9 +204,8 @@ def spawn_local_server():
  import socketserver
  Handler = http.server.SimpleHTTPRequestHandler
  Handler.extensions_map.update({ '.wasm': 'application/wasm' })
  - server_dir = OUTPUT_DIR + '..'
  - Handler.directory = server_dir
  - os.chdir(server_dir)
  + Handler.directory = OUTPUT_DIR
  + os.chdir(OUTPUT_DIR)
  socketserver.TCPServer.allow_reuse_address = True
  port = 8000
  print(f"serving docs at http://localhost:{port}")
  