[flybot] Fly CLI docs update

flyctl/cmd/fly_mpg_create.md

@@ -14,7 +14,7 @@ fly mpg create [flags]
   -n, --name string              The name of your Postgres cluster
   -o, --org string               The target Fly.io organization
       --pg-major-version int     The major version of Postgres to use for the Postgres cluster. Supported versions are 16 and 17. (default 16)
-      --plan string              The plan to use for the Postgres cluster (development, production, etc)
+      --plan string              The plan to use for the Postgres cluster: Basic, Starter, Launch, Scale, Performance
   -r, --region string            The target region (see 'flyctl platform regions')
       --volume-size int          The volume size in GB (default 10)
 ~~~

flyctl/cmd/fly_postgres_create.md

@@ -15,6 +15,7 @@ fly postgres create [flags]
       --enable-backups              Create a new tigris bucket and enable WAL-based backups
       --flex                        Create a postgres cluster that's managed by Repmgr (default true)
       --fork-from string            Specify a source Postgres application to fork from. Format: <app-name> or <app-name>:<volume-id>
+      --generate-name               Generate an app name
   -h, --help                        help for create
       --host-dedication-id string   The dedication id of the reserved hosts for your organization (if any)
       --image-ref string            Specify a non-default base image for the Postgres app