update examples for full-time

Author: gregsdennis

specs/registries/format.json

@@ -323,7 +323,7 @@
         "definingBody": "JSON Schema",
         "definition": "https://json-schema.org/draft/2020-12/json-schema-validation.html#name-dates-times-and-duration",
         "types": ["string"],
-        "examples": ["13:45:30"],
+        "examples": ["13:45:30Z", "13:45:30+01:00"],
         "deprecated": false,
         "supportedBy": []
     },