Fix pep8 failure by adding a space after a #

Change-Id: I247c9abc8c878edbf952071aac45fa7bb2ef1cf7
diff --git a/jeepyb/cmd/update_blueprint.py b/jeepyb/cmd/update_blueprint.py
index 7fa09d1..8b070c2 100644
--- a/jeepyb/cmd/update_blueprint.py
+++ b/jeepyb/cmd/update_blueprint.py
@@ -143,7 +143,7 @@
     # patchset-abandoned
     parser.add_argument('--abandoner', default=None)
     parser.add_argument('--reason', default=None)
-    #change-merged
+    # change-merged
     parser.add_argument('--submitter', default=None)
     parser.add_argument('--newrev', default=None)
     # patchset-created