fix typo

3.11.txt

@@ -13,7 +13,7 @@ These aren't promises, but things I'd like to do:
 - Make DBs context manager, so in a simple script, one could do:
 
   with ZEO.DB(someaddr) as connection:
-      do some things in a transaction. Commot and close at the end.
+      do some things in a transaction. Commit and close at the end.
 
 - Persistent sets.