docs: 'uc docs' command to generate CLI reference docs

website/docs/9-cli-reference/uc_dns.md

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+# uc dns
+
+Manage cluster domain in Uncloud DNS.
+
+## Synopsis
+
+Manage cluster domain in Uncloud DNS.
+DNS commands allow you to reserve or release a unique '\<id>.cluster.uncloud.run' domain for your cluster. When reserved, Caddy service deployments will automatically update DNS records to route traffic to the services in the cluster.
+
+## Options
+
+```
+  -h, --help   help for dns
+```
+
+## Options inherited from parent commands
+
+```
+      --connect string          Connect to a remote cluster machine without using the Uncloud configuration file.
+                                Format: [ssh://]user@host[:port] or tcp://host:port
+      --uncloud-config string   Path to the Uncloud configuration file. (default "~/.config/uncloud/config.yaml")
+```
+
+## See also
+
+* [uc](uc.md)	 - A CLI tool for managing Uncloud resources such as clusters, machines, and services.
+* [uc dns release](uc_dns_release.md)	 - Release the reserved cluster domain.
+* [uc dns reserve](uc_dns_reserve.md)	 - Reserve a cluster domain in Uncloud DNS.
+* [uc dns show](uc_dns_show.md)	 - Print the cluster domain name.
+