Change 'Tools integration' to 'Built-in Tools'

Update heading to better reflect the nature of the tools section.

Author: OskarStark

ai.symfony.com/templates/homepage.html.twig

@@ -132,7 +132,7 @@
                     </div>
 
                     <div class="col-md-6 col-lg-3">
-                        <h2 class="ff-title fw-bold h4 mb-4 mt-5 mt-lg-0 text-center">Tools integration</h2>
+                        <h2 class="ff-title fw-bold h4 mb-4 mt-5 mt-lg-0 text-center">Built-in Tools</h2>
                         <article class="sf-ai-card sf-ai-card-hover sf-ai-card-hover-dark p-3 p-lg-4">
                             <div class="sf-ai-card-body sf-ai-logo-grid">
                                 <span class="logo-pill">