Fixes jazzband#101 by expanding the help text default value

Author: nschlemm

dbtemplates/management/commands/sync_templates.py

@@ -27,7 +27,7 @@ def add_arguments(self, parser):
             "-e", "--ext",
             dest="ext", action="store", default="html",
             help="extension of the files you want to "
-                 "sync with the database [default: %default]")
+                 "sync with the database [default: %(default)s]")
         parser.add_argument(
             "-f", "--force",
             action="store_true", dest="force", default=False,