message: Fix command to create a backend plugin
diff: @@ -13,7 +13,7 @@ A new, bare-bones backend plugin package can be created by issuing the following
  command in your Backstage repository root:
  ```sh
  -yarn create-plugin --backend
  +yarn new --select backend-plugin
  ```
  Please also see the `--help` flag for the `create-plugin` command for some
  