Update image URLs in README.md to use hosted assets

README.md

@@ -16,19 +16,21 @@ The official **Chapa Flutter SDK** enables Flutter developers to integrate Chapa
 <div style="display: flex; justify-content: space-between; align-items: center;">
   <div style="text-align: center;">
     <p>Payment Methods in Grid View</p>
-    <img src="doc/gridview.png" alt="Payment Methods in Grid View" style="width: 200px;" />
+    <img src="https://chapa-bucket.s3.us-east-1.amazonaws.com/chapa-flutter-sdk-assets/doc/gridview.png" alt="Payment Methods in Grid View" style="width: 200px;" />
   </div>
   <div style="text-align: center;">
     <p>Payment Methods in List View with Customized Button Color</p>
-    <img src="doc/listview.png" alt="Payment Methods in List View" style="width: 200px;" />
+    <img src="https://chapa-bucket.s3.us-east-1.amazonaws.com/chapa-flutter-sdk-assets/doc/listview.png" alt="Payment Methods in List View" style="width: 200px;" />
   </div>
   <div style="text-align: center;">
     <p>Error</p>
-    <img src="doc/error.png" alt="Error" style="width: 200px;" />
+    <img src="https://chapa-bucket.s3.us-east-1.amazonaws.com/chapa-flutter-sdk-assets/doc/error.png" alt="Error" style="width: 200px;" />
   </div>
   <div style="text-align: center;">
     <p>Successful Payment Receipt</p>
-    <img src="doc/success.png" alt="Successful Payment Receipt" style="width: 200px;" />
+    <img src="https://chapa-bucket.s3.us-east-1.amazonaws.com/chapa-flutter-sdk-assets/doc/success.png" alt="Successful Payment Receipt" style="width: 200px;" />
+
+
   </div>
 </div>