chore: rename task-form.scss to task-form.css in English documentation

- Updated file extension from .scss to .css for the task-form component in the English documentation to maintain consistency across all language versions.

Author: geromegrignon

src/content/docs/en/create-task/create-form-component.mdx

@@ -51,7 +51,7 @@ import NotificationCard from "../../../../components/ui/NotificationCard";
        └─ task-form
    +       └─ task-form.ts
    +       └─ task-form.html
-   +       └─ task-form.scss
+   +       └─ task-form.css
    ```
 
 </Steps>