chore: update sponsor link

(cherry picked from commit b916635)

Author: yyx990803

docs/.vuepress/components/Bit.vue

@@ -1,6 +1,6 @@
 <template>
   <p class="bit-sponsor">
-    <a href="https://www.bitsrc.io/?utm_source=vue&utm_medium=vue&utm_campaign=vue&utm_term=vue&utm_content=vue" target="_blank">
+    <a href="https://bit.dev/?utm_source=vue&utm_medium=vue&utm_campaign=vue&utm_term=vue&utm_content=vue" target="_blank">
       <span>This project is sponsored by</span>
       <img alt="bit" src="/bit-wide.png">
     </a>