fix: add cursor pointer to buttons for better UX and update WeatherForm instructions

frontend/src/components/ChangeAPI.tsx

@@ -53,7 +53,7 @@ const ChangeAPI: React.FC<Props> = ({ currentAPIKey, onClose }) => {
         </div>
         <button
           type="submit"
-          className="bg-gradient-to-r from-blue-600 to-blue-400 text-white font-bold px-6 py-3 rounded-xl shadow-lg hover:from-blue-700 hover:to-blue-500 transition-all"
+          className="cursor-pointer bg-gradient-to-r from-blue-600 to-blue-400 text-white font-bold px-6 py-3 rounded-xl shadow-lg hover:from-blue-700 hover:to-blue-500 transition-all"
           onClick={handleUpdate}
         >
           Update API Key