docs(c48): refactor

docs/src/content/docs/challenges/forms/48-avoid-losing-form-data.md

@@ -29,13 +29,13 @@ Here's the feature expressed as a user story with a functional expectation:
 1. If one of the form fields is not empty and the user tries to navigate to a different route or page, or wants to reload the page, show an alert dialog to _avoid losing form data_.
 
 2. The content of `dialog.component.ts` must be used for your alert.
-3. The appearance and behavior of the alert dialog box must comply with W3C conventions, see [alert dialog pattern](https://www.w3.org/WAI/ARIA/apg/patterns/alertdialog/).
+3. The appearance and behavior of the alert dialog must comply with W3C conventions, see [alert dialog pattern](https://www.w3.org/WAI/ARIA/apg/patterns/alertdialog/).
 4. Maximize the use of the new concepts and syntax in the latest version of Angular.
 
 <details>
-    <summary>Tips 🤫 (if you really need it and after careful consideration)</summary>
+    <summary>Tips 🤫 if you really need it and after careful consideration ...</summary>
     <ul>
-    <li>Use the [Material CDK](https://material.angular.io/cdk/) Dialog or Overlay - dont forget to add <code>@import '@angular/cdk/overlay-prebuilt.css'</code> in <code>styles.scss</code></li>
-    <li>Use the [CanDeactivate](https://angular.io/api/router/CanDeactivate) guard in the new functional approach.</li>
+    * Use the [Material CDK](https://material.angular.io/cdk/) Dialog or Overlay - dont forget to add `@import '@angular/cdk/overlay-prebuilt.css'` in `styles.scss`.
+    * Use the [CanDeactivate](https://angular.io/api/router/CanDeactivate) guard in the new functional approach.
     </ul>
 </details>