fix: signal

Author: geromegrignon

src/content/docs/en/getting-started/getting-started.mdx

@@ -115,7 +115,7 @@ Hot reloading is a feature that allows you to see the changes you make to your c
 
       ```html ins="app.html"
       // app.html
-        <h1>Welcome to {{title}}!</h1>
+        <h1>Welcome to {{title()}}!</h1>
       ```
 
 3. In the file `app.ts`, locate the `imports` array and remove the `RouterOutlet` import: