lint fixes

Signed-off-by: Curtis Mason <cumason@google.com>

Author: Curtis Mason

cloudevents/sdk/http_events.py

@@ -85,7 +85,7 @@ def __init__(
                         "{0} expected type str but found type {1}".format(
                             ce_prefixed_field, type(headers[ce_prefixed_field])
                         ))
-            
+
         else:
             # TODO: Support structured CloudEvents
             raise NotImplementedError
@@ -107,11 +107,11 @@ def is_binary_cloud_event(headers):
             if f"ce-{field}" not in headers:
                 return False
         return True
-    
+
     @staticmethod
     def detect_event_version(headers, data):
         """
-        Returns event handler depending on specversion within 
+        Returns event handler depending on specversion within
         headers for binary cloudevents or within data for structured
         cloud events
         """