feat: make connection method using system 'ssh' the default (add ssh+go:// fallback)

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

@@ -16,7 +16,7 @@ uc service ls [flags]
 
 ```
       --connect string          Connect to a remote cluster machine without using the Uncloud configuration file. [$UNCLOUD_CONNECT]
-                                Format: [ssh://]user@host[:port], ssh+cli://user@host[:port], tcp://host:port, or unix:///path/to/uncloud.sock
+                                Format: [ssh://]user@host[:port], ssh+go://user@host[:port], tcp://host:port, or unix:///path/to/uncloud.sock
   -c, --context string          Name of the cluster context to use (default is the current context). [$UNCLOUD_CONTEXT]
       --uncloud-config string   Path to the Uncloud configuration file. [$UNCLOUD_CONFIG] (default "~/.config/uncloud/config.yaml")
 ```