Add documentation about js, deno, & python runtimes

templates/documentation.html

@@ -141,6 +141,40 @@ async (req) => {
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                 </div>
 
+                <!-- Supported Runtimes -->
+                <div class="w-full p-6">
+                    <div class="bg-white rounded-lg shadow-lg p-6">
+                        <h3 class="text-2xl font-bold text-gray-800 mb-2">Supported Runtimes</h3>
+                        <p class="text-gray-600 mb-4">You can write your functions in JavaScript, Deno, or Python. The
+                            runtime is determined by the file extension of your entrypoint.</p>
+
+                        <h4 class="text-xl font-bold text-gray-800 mt-6 mb-2">JavaScript (Node.js)</h4>
+                        <p class="text-gray-600 mb-4">The JavaScript runtime uses Node.js. You can use modern
+                            JavaScript features, including `async/await`. NPM packages are not supported.</p>
+                        <pre class="bg-gray-800 text-white p-4 rounded-md"><code>// Example: A simple JavaScript function
+async (req) => {
+    return JsonResponse({ message: "Hello from JavaScript!" });
+}</code></pre>
+
+                        <h4 class="text-xl font-bold text-gray-800 mt-6 mb-2">Deno</h4>
+                        <p class="text-gray-600 mb-4">The Deno runtime offers a modern, secure, and TypeScript-first
+                            environment. You can import modules directly from URLs.</p>
+                        <pre class="bg-gray-800 text-white p-4 rounded-md"><code>// Example: A simple Deno function
+import { serve } from "https://deno.land/std@0.140.0/http/server.ts";
+
+async (req) => {
+    return JsonResponse({ message: "Hello from Deno!" });
+}</code></pre>
+
+                        <h4 class="text-xl font-bold text-gray-800 mt-6 mb-2">Python</h4>
+                        <p class="text-gray-600 mb-4">The Python runtime uses Python 3. You can use the standard
+                            library, but third-party packages are not supported.</p>
+                        <pre class="bg-gray-800 text-white p-4 rounded-md"><code># Example: A simple Python function
+async def main(req):
+    return JsonResponse({"message": "Hello from Python!"})</code></pre>
+                    </div>
+                </div>
+
             </div>
         </section>
     </div>