fix(playground): add function to open github

Author: BeADre

packages/sfc-playground/src/Header.vue

@@ -41,6 +41,10 @@ async function copyLink() {
   alert('Sharable URL has been copied to clipboard.')
 }
 
+function openGithub() {
+  window.open('https://github.com/vuejs/core/tree/main/packages/sfc-playground', '_blank')
+}
+
 function toggleDark() {
   const cls = document.documentElement.classList
   cls.toggle('dark')
@@ -149,13 +153,8 @@ async function fetchVersions(): Promise<string[]> {
       >
         <Download />
       </button>
-      <button title="View on GitHub" class="github">
-        <a
-          href="https://github.com/vuejs/core/tree/main/packages/sfc-playground"
-          target="_blank"
-        >
-          <GitHub />
-        </a>
+      <button title="View on GitHub" class="github" @click="openGithub">
+        <GitHub />
       </button>
     </div>
   </nav>