Fix docstrings errors

rasa/core/channels/hangouts.py

@@ -14,16 +14,22 @@
 logger = logging.getLogger(__name__)
 
 CHANNEL_NAME = "hangouts"
-CERT_URI = "https://www.googleapis.com/service_accounts/v1/metadata\
-            /x509/[email protected]"
+CERT_URI = (
+    "https://www.googleapis.com/service_accounts/"
+    "v1/metadata/x509/[email protected]"
+)
 
 
 class HangoutsOutput(OutputChannel):
+    """A Hangouts communication channel."""
+
     @classmethod
     def name(cls) -> Text:
+        """Return channel name."""
         return CHANNEL_NAME
 
     def __init__(self) -> None:
+        """Starts messages as empty dictionary"""
         self.messages = {}
 
     @staticmethod

rasa/nlu/classifiers/keyword_intent_classifier.py

@@ -100,6 +100,7 @@ def _validate_keyword_map(self) -> None:
             )
 
     def process(self, message: Message, **kwargs: Any) -> None:
+        """Set the message intent and add it to the output is it exists."""
         intent_name = self._map_keyword_to_intent(message.get(TEXT))
 
         confidence = 0.0 if intent_name is None else 1.0