fix: fix docstrings

Author: mariajgrimaldi

openedx_events/tooling.py

@@ -13,7 +13,8 @@
 
 
 class OpenEdxPublicSignal(Signal):
-    """Custom class used to create Open edX events.
+    """
+    Custom class used to create Open edX events.
     """
 
     def __init__(self, event_type=None, data=None, minor_version="0.0"):
@@ -28,7 +29,8 @@ def __repr__(self):
         return "OpenEdxPublicSignal: {event_type}".format(self.event_type)
 
     def get_signal_metadata(self):
-        """Used to set signal extra metadata when an event is triggered.
+        """
+        Used to set signal extra metadata when an event is triggered.
 
         These fields are generated on the fly and are a subset of the Event
         Message defined in the OEP-41.