Fix small typos in docstring

diff --git a/lib/sqlalchemy/orm/session.py b/lib/sqlalchemy/orm/session.py
index a658783c2cbf7a3e33c31c11337d60e17c071cf8..c010a217bd4fd1c7ba8d265d0f4a49773d2679c8 100644 (file)
--- a/lib/sqlalchemy/orm/session.py
+++ b/lib/sqlalchemy/orm/session.py
@@ -638,9 +638,9 @@ class Session(object):
         If no transaction is in progress, this method is a pass-through.
 
         This method rolls back the current transaction or nested transaction
-        regardless of subtransactions being in effect.  All subtrasactions up
+        regardless of subtransactions being in effect.  All subtransactions up
         to the first real transaction are closed.  Subtransactions occur when
-        begin() is called mulitple times.
+        begin() is called multiple times.
 
         """
         if self.transaction is None: