Fixed accidental removal of trailing whitespaces.

Author: AbhigyanBose

Lib/test/test_argparse.py

@@ -2265,7 +2265,7 @@ def test_help_blank(self):
             main description
 
             positional arguments:
-              foo
+              foo         
 
             options:
               -h, --help  show this help message and exit
@@ -2282,7 +2282,7 @@ def test_help_blank(self):
             main description
 
             positional arguments:
-              {}
+              {}          
 
             options:
               -h, --help  show this help message and exit