取消select version

Author: flyingcys

docs/en/_templates/versions.html

@@ -1,8 +1,7 @@
 {# 独立版本选择器组件，不依赖模板继承 #}
 <div class="version-selector-wrapper">
   <select id="version-select" class="version-select">
-    <option value="">Select version...</option>
-    <option value="/en/latest/">master</option>
+    <option value="/en/latest/" selected>master</option>
     <option value="/en/stable/">release</option>
   </select>
 </div>