Fix: fixed onlycover flag in mobile (#1243)

Author: mohammedsahl

Diff for: src/core/render/tpl.js

@@ -1,4 +1,3 @@
-import { isMobile } from '../util/env';
 /**
  * Render github corner
  * @param  {Object} data URL for the View Source on Github link
@@ -51,9 +50,8 @@ export function main(config) {
       : '') +
     '<div class="sidebar-nav"><!--sidebar--></div>' +
     '</aside>';
-
   return (
-    (isMobile ? `${aside}<main>` : `<main>${aside}`) +
+    `<main>${aside}` +
     '<section class="content">' +
     '<article class="markdown-section" id="main"><!--main--></article>' +
     '</section>' +