update form action URL for image resizing service

Author: Adityasinghvats

index.html

@@ -15,7 +15,7 @@ <h1 class="text-4xl font-extrabold text-blue-700 tracking-tight">Sankuchit</h1>
         </header>
 
         <div class="bg-white shadow-md rounded-lg p-8">
-            <form action="" method="post" enctype="multipart/form-data" class="space-y-6">
+            <form action="https://sankuchit.onrender.com/resize" method="post" enctype="multipart/form-data" class="space-y-6">
                 <div>
                     <label for="width" class="block text-gray-700 text-sm font-bold mb-2">Width (px):</label>
                     <input step="10" type="number" name="width" id="width" placeholder="Enter width" class="shadow appearance-none border rounded w-full py-2 px-3 text-gray-700 leading-tight focus:outline-none focus:shadow-outline">