Merge pull request #3909 from mailcow/task/api-domain-ratelimit-day

[Api docs] Added day ratelimit option to /add/domain endpoint

data/web/api/openapi.yaml

@@ -533,6 +533,7 @@ paths:
                     - s
                     - m
                     - h
+                    - d
                   type: string
                 rl_value:
                   description: rate limit value