Merge pull request julien-duponchelle#420 from 23-OSSCA-python-mysql-replication/xa-prepare-event-typo

Fix typo in XAPrepareEvent comment

Author: julien-duponchelle

pymysqlreplication/event.py

@@ -133,7 +133,7 @@ def dump(self):
 
 class XAPrepareEvent(BinLogEvent):
  """An XA prepare event is generated for a XA prepared transaction.
- Like Xid_event it contans XID of the *prepared* transaction
+ Like Xid_event it contains XID of the *prepared* transaction
 
  Attributes:
  one_phase: current XA transaction commit method