Fixed typo in a doctest of test_genexps.
diff --git a/Lib/test/test_genexps.py b/Lib/test/test_genexps.py
index 0317955..ab9f85d 100644
--- a/Lib/test/test_genexps.py
+++ b/Lib/test/test_genexps.py
@@ -92,7 +92,7 @@
 Verify that parenthesis are required when used as a keyword argument value
 
     >>> dict(a = (i for i in xrange(10))) #doctest: +ELLIPSIS
-    {'a': <<genexp> generator object at ...>}
+    {'a': <<genexpr> generator object at ...>}
 
 Verify early binding for the outermost for-expression