[docs] Fix index page (#3997)

* fix

* correct link

* Fix typo

---------
Co-authored-by: Pedro Cuenca <pedro@huggingface.co>

docs/source/en/index.mdx

@@ -40,7 +40,7 @@ The library has three main components:
       ><div class="w-full text-center bg-gradient-to-br from-pink-400 to-pink-500 rounded-lg py-1.5 font-semibold mb-5 text-white text-lg leading-relaxed">Conceptual guides</div>
       <p class="text-gray-700">Understand why the library was designed the way it was, and learn more about the ethical guidelines and safety implementations for using the library.</p>
    </a>
-    <a class="!no-underline border dark:border-gray-700 p-5 rounded-lg shadow hover:shadow-lg" href="./api/models"
+    <a class="!no-underline border dark:border-gray-700 p-5 rounded-lg shadow hover:shadow-lg" href="./api/models/overview"
       ><div class="w-full text-center bg-gradient-to-br from-purple-400 to-purple-500 rounded-lg py-1.5 font-semibold mb-5 text-white text-lg leading-relaxed">Reference</div>
       <p class="text-gray-700">Technical descriptions of how 🤗 Diffusers classes and methods work.</p>
     </a>