message: docs: use Backstage application directory
diff: @@ -17,7 +17,7 @@ Let's get started by installing the home plugin and creating a simple home page
  #### 1. Install the plugin
  ```
  -# From the Backstage repository root
  +# From your Backstage application directory
  cd packages/app
  yarn add @backstage/plugin-home
  ```
  