chore: update sponsor

Author: yyx990803

BACKERS.md

@@ -17,8 +17,8 @@ Funds donated via Patreon go directly to support Evan You's full-time work on Vu
 <!--special start-->
 
 <p align="center">
-  <a href="https://stdlib.com" target="_blank">
-    <img width="260px" src="https://raw.githubusercontent.com/vuejs/vuejs.org/master/themes/vue/source/images/stdlib.png">
+  <a href="https://code.xyz/" target="_blank">
+    <img width="260px" src="https://raw.githubusercontent.com/vuejs/vuejs.org/master/themes/vue/source/images/codexyz.png">
   </a>
 </p>
 

README.md

@@ -27,8 +27,8 @@ Funds donated via Patreon go directly to support Evan You's full-time work on Vu
 <!--special start-->
 
 <p align="center">
-  <a href="https://stdlib.com" target="_blank">
-    <img width="260px" src="https://raw.githubusercontent.com/vuejs/vuejs.org/master/themes/vue/source/images/stdlib.png">
+  <a href="https://code.xyz/" target="_blank">
+    <img width="260px" src="https://raw.githubusercontent.com/vuejs/vuejs.org/master/themes/vue/source/images/codexyz.png">
   </a>
 </p>