chore(site): automated update from circleci

Author: kt3k

index.html

@@ -94,6 +94,7 @@ <h2>公式ドキュメント</h2>
 
 <ul>
   <li><a href="https://nodejs.org/api/">Node.js 最新</a>
+  <li><a href="https://nodejs.org/dist/latest-v16.x/docs/api/">Node.js v16.x</a>
   <li><a href="https://nodejs.org/dist/latest-v14.x/docs/api/">Node.js v14.x</a>
   <li><a href="https://nodejs.org/dist/latest-v12.x/docs/api/">Node.js v12.x</a>
   <li><a href="https://nodejs.org/dist/latest-v10.x/docs/api/">Node.js v10.x</a>