Update head.ejs

禁止缓存html

node_modules/hexo-theme-fluid/layout/_partials/head.ejs

@@ -38,6 +38,9 @@ var ogConfig = Object.assign({ image: ogImage && url_for(ogImage) }, theme.open_
     <%- theme.custom_head %>
   <% } %>
   <title><%= title %></title>
+<meta http-equiv="Cache-Control" content="no-cache, no-store, must-revalidate" />
+<meta http-equiv="Pragma" content="no-cache" />
+<meta http-equiv="Expires" content="0" />
 
   <%- partial('_partials/css.ejs') %>
   <%- export_config() %>