fix typo

tests/test_ssl.py

@@ -37,6 +37,6 @@ for s in conf_servers:
         print('Checking SSL certificate of %s' % url)
         requests.get(url)
     except requests.exceptions.SSLError:
-        print('%sSSL certificate for %s is not valid' % (RED, url, DEF))
+        print('%sSSL certificate for %s is not valid%s' % (RED, url, DEF))
         all_ok = False
 sys.exit(int(not all_ok))