docs: migrate 3 CodePens to the Vue account

vuejs/docs@beb65fb#diff-87162cc46e3a6b07566bab1abe9cd2ace23a1df367d04d038a0658e1a376e939

Author: naokie

src/guide/a11y-basics.md

@@ -54,7 +54,7 @@ export default {
 </script>
 ```
 
-<common-codepen-snippet title="Skip to Main" slug="VwepxJa" :height="350" tab="js,result" :team="false" user="mlama007" name="Maria" theme="light" :preview="false" :editable="false" />
+<common-codepen-snippet title="Skip to Main" slug="GRrvQJa" :height="350" tab="js,result" theme="light" :preview="false" :editable="false" />
 
 [メインコンテンツへのスキップリンクについてのドキュメントを読む](https://www.w3.org/WAI/WCAG21/Techniques/general/G1.html)