Add automatic docstring formatter and apply

libp2p/protocol_muxer/multiselect_communicator_interface.py

@@ -2,21 +2,17 @@ from abc import ABC, abstractmethod
 
 
 class IMultiselectCommunicator(ABC):
-    """
-    Communicator helper class that ensures both the client
-    and multistream module will follow the same multistream protocol,
-    which is necessary for them to work
-    """
+    """Communicator helper class that ensures both the client and multistream
+    module will follow the same multistream protocol, which is necessary for
+    them to work."""
 
     @abstractmethod
     async def write(self, msg_str: str) -> None:
-        """
-        Write message to stream
+        """Write message to stream.
+
         :param msg_str: message to write
         """
 
     @abstractmethod
     async def read(self) -> str:
-        """
-        Reads message from stream until EOF
-        """
+        """Reads message from stream until EOF."""