Update zh-cn.html

Author: Trumeet

support/which-kind-of-key-should-i-input/zh-cn.html

@@ -40,6 +40,8 @@ <h2><a name='header-n19' class='md-header-anchor '></a>我曾使用微信或其
       <p> 注：这种激活码以大写字母 &#39;R&#39; 开头。</p>
     </blockquote>
     <p>请将您的激活码填入即可。</p>
+    <h2><a name='header-n8' class='md-header-anchor '></a>我在 shop.yuuta.moe 购买</h2>
+    <p>请参阅 <a href='https://shop.yuuta.moe/how-to-activate-original-software/'>https://shop.yuuta.moe/how-to-activate-original-software/</a> 进行激活</p>
   </div>
 </body>