📝 (createCanal) add docs for Stop onBack hook

Author: tpucci

src/createCanal.mdx

@@ -12,11 +12,13 @@ route: /api/create-canal
 
 ## Stop
 
-|    Key name    | Required | Default     | Usage                                                                         |
-| :------------: | :------: | ----------- | ----------------------------------------------------------------------------- |
-|     `name`     |  `true`  | `undefined` | Unique identifier.                                                            |
-|  `component`   |  `true`  | `undefined` | The component that will be rendered when the user progress reaches that stop. |
-| `isFullScreen` | `false`  | `undefined` | Indicates if the stop needs to be rendered in the `FullScreenPortal`.         |
+|    Key name    | Required | Default     | Usage                                                                           |
+| :------------: | :------: | ----------- | ------------------------------------------------------------------------------- |
+|     `name`     |  `true`  | `undefined` | Unique identifier.                                                              |
+|  `Component`   |  `true`  | `undefined` | The component that will be rendered when the user progress reaches that stop.   |
+|    `props`     | `false`  | `undefined` | Optional. Props that will be passed down to the component.                      |
+|    `onBack`    | `false`  | `undefined` | Optional. Android Back button Callback.                                         |
+| `isFullScreen` | `false`  | `undefined` | Optional. Indicates if the stop needs to be rendered in the `FullScreenPortal`. |
 
 ## Canal Props