pythongh-120713: fixed comment

Author: blhsing

Lib/test/datetimetester.py

@@ -1698,7 +1698,7 @@ def test_bool(self):
 
     def test_strftime_y2k(self):
         # Test that years less than 1000 are 0-padded; note that the beginning
-        # an ISO 8601 year may fall in an ISO week of the year before, and
+        # of an ISO 8601 year may fall in an ISO week of the year before, and
         # therefore needs an offset of -1 when formatting with '%G'.
         for y, o in ((1, 0), (49, -1), (70, 0), (99, 0), (100, -1), (999, 0),
                      (1000, 0), (1970, 0)):