forgot format

tests/test_dns_records.py

@@ -113,7 +113,7 @@ def check_resolver(conf: dict, resolvers: set) -> tuple:
                 u.warning("resolver {} not configured".format(conf_resolver))
                 warnings += 1
             else:
-                u.success("resolver {} configured")
+                u.success("resolver {} configured".format(conf_resolver))
 
     if not resolver_set:
         u.info("no resolver defined in envsetup configuration, unable to test DNS")