Docs: minor clarifications to playground instructions (#687)

playground.md

@@ -8,14 +8,14 @@ icon: play-24
 
 You can showcase, clone and develop a few pagy APPs without the need to setup anything on your side!
 
+!!!warning `bundle exec pagy`
+Depending on your environment you may need to prepend `bundle exec` in all the examples shown.
+!!!
+
 ```sh
 $ pagy --help
 ```
 
-!!!warning `bundle exec pagy`
-Depending on your environment you may need to prepend `bundle exec` in all the examples shown in this page
-!!!
-
 ### Pagy Apps
 
 We have a few single-file apps ready to run in your browser for various purposes...
@@ -49,7 +49,12 @@ Edit it at will.
 
 #### 2. Rails App
 
-Starting point app to reproduce **rails related** pagy issues. Same usage as the [Repro App](#1-repro-app).
+Starting point app to reproduce **rails related** pagy issues. It has the same usage as the [Repro App](#1-repro-app). i.e.:
+
+```sh
+pagy clone rails
+pagy ./rails.ru
+```
 
 #### 3. Demo App