add certs to fly mcp server; also add description to each family of commands

Author: rubys

mcp/flyctl-server.html.md

@@ -19,14 +19,15 @@ You can also specify `--cursor`, `--neovim`, `--vscode`, `--windsurf`, or `--zed
 
 `flyctl` provides an MCP server that you can use to provision your application. At the present time, most of the following commands and their subcommands are supported:
 
-* [apps](https://fly.io/docs/flyctl/apps/)
-* [logs](https://fly.io/docs/flyctl/logs/)
-* [machine](https://fly.io/docs/flyctl/machine/)
-* [orgs](https://fly.io/docs/flyctl/orgs/)
-* [platform](https://fly.io/docs/flyctl/platform/)
-* [secrets](https://fly.io/docs/flyctl/secrets/)
-* [status](https://fly.io/docs/flyctl/status/)
-* [volumes](https://fly.io/docs/flyctl/volumes/)
+* [apps](https://fly.io/docs/flyctl/apps/) - Manage Fly applications. A Fly App is an abstraction for a group of Fly Machines running your code on Fly.io.
+* [certs](https://fly.io/docs/flyctl/certs/) - Manage the certificates associated with a deployed application.
+* [logs](https://fly.io/docs/flyctl/logs/) - View application logs as generated by the application running on the Fly platform.
+* [machine](https://fly.io/docs/flyctl/machine/) - Manage Fly Machines. Fly Machines are super-fast, lightweight VMs that can be created, and then quickly started and stopped as needed with flyctl commands or with the Machines REST fly.
+* [orgs](https://fly.io/docs/flyctl/orgs/) - Manage Fly organizations. Organization admins can also invite or remove users from organizations.
+* [platform](https://fly.io/docs/flyctl/platform/) - Information about the Fly platform
+* [secrets](https://fly.io/docs/flyctl/secrets/) - Manage secrets. Secrets are provided to applications at runtime as ENV variables.
+* [status](https://fly.io/docs/flyctl/status/) - Show the application’s current status including application details, tasks, most recent deployment details and in which regions it is currently allocated.
+* [volumes](https://fly.io/docs/flyctl/volumes/) - Manage Fly Volumes. Volumes are persistent storage for Fly Machines. 
 
 ## Running with the MCP inspector