message: fixes typo "protoocl"
diff: @@ -140,7 +140,7 @@ class ProtocolContext(CommandPublisher):
  @property # type: ignore
  @requires_version(2, 0)
  def api_version(self) -> APIVersion:
  - """ Return the API version supported by this protoocl context.
  + """ Return the API version supported by this protocol context.
  The supported API version was specified when the protocol context
  was initialized. It may be lower than the highest version supported
  