[qa] Updated capital in first letter description openwisp#20

Fixes openwisp#20

openwisp_utils/qa.py

@@ -57,7 +57,7 @@ def _commit_check_args():
     """
     Parse and return CLI arguments
     """
-    parser = argparse.ArgumentParser(description="make sure the message "
+    parser = argparse.ArgumentParser(description="Make sure the message "
                                      "matches the format. If "
                                      "not appropriate, "
                                      "raise exception!")