typo

transaction/interfaces.py

@@ -32,7 +32,7 @@ class ITransactionManager(Interface):
         Note that transactions may be started implicitly without
         calling ``begin``. In that case, ``newTransaction`` isn't
         called because the transaction manager doesn't know when to
-        call it.  The transaction is likely to have begin long before
+        call it.  The transaction is likely to have begun long before
         the transaction manager is involved. (Conceivably 'commit' and
         'abort' could call 'begin', but they don't.)
         """