Fix desktop spelling in lib/web/css #4557

lib/web/css/docs/sections.html

@@ -559,7 +559,7 @@
     </table>
   </pre>
 </div></article><article id="responsive-tabs" class="section"><div class="docs"><a href="#responsive-tabs" class="permalink"><svg viewBox="0 0 512 512" height="32" width="32" class="icon"><path d="M156.2,199.7c7.5-7.5,15.9-13.8,24.8-18.7c49.6-27.3,113.1-12.8,145,35.5l-38.5,38.5c-11.1-25.2-38.5-39.6-65.8-33.5c-10.3,2.3-20.1,7.4-28,15.4l-73.9,73.9c-22.4,22.4-22.4,58.9,0,81.4c22.4,22.4,58.9,22.4,81.4,0l22.8-22.8c20.7,8.2,42.9,11.5,64.9,9.9l-50.3,50.3c-43.1,43.1-113,43.1-156.1,0c-43.1-43.1-43.1-113-0-156.1L156.2,199.7z M273.6,82.3l-50.3,50.3c21.9-1.6,44.2,1.6,64.9,9.9l22.8-22.8c22.4-22.4,58.9-22.4,81.4,0c22.4,22.4,22.4,58.9,0,81.4l-73.9,73.9c-22.5,22.5-59.1,22.3-81.4,0c-5.2-5.2-9.7-11.7-12.5-18l-38.5,38.5c4,6.1,8.3,11.5,13.7,16.9c13.9,13.9,31.7,24.3,52.1,29.3c26.5,6.4,54.8,2.8,79.2-10.6c8.9-4.9,17.3-11.1,24.8-18.7l73.9-73.9c43.1-43.1,43.1-113,0-156.1C386.6,39.2,316.7,39.2,273.6,82.3z"></path></svg></a><h1 id="responsive-tabs">Responsive tabs</h1>
-<p>  Since tabs and accordion have same markup, they can transform one into other by means of CSS and JavaScript. This can be used for responsive web design. For instance, for mobile version there is an accordion, for desctop version it is transformed to tabs. To implement this approach, use the  <code>.lib-data-accordion()</code> mixin for mobile version, and the <code>.lib-data-tabs()</code> mixin for desctop version.</p>
+<p>  Since tabs and accordion have same markup, they can transform one into other by means of CSS and JavaScript. This can be used for responsive web design. For instance, for mobile version there is an accordion, for desktop version it is transformed to tabs. To implement this approach, use the  <code>.lib-data-accordion()</code> mixin for mobile version, and the <code>.lib-data-tabs()</code> mixin for desktop version.</p>
 <textarea class="preview-code" spellcheck="false">  &lt;dl class="example-sections-4" data-sections="tabs"&gt;
     &lt;dt class="item title active" data-section="title"&gt;
         &lt;a class="switch" data-toggle="switch" href="#product.info.description"&gt;Details&lt;/a&gt;

lib/web/css/docs/source/_sections.less

@@ -586,7 +586,7 @@
 
 //  # Responsive tabs
 //
-//  Since tabs and accordion have same markup, they can transform one into other by means of CSS and JavaScript. This can be used for responsive web design. For instance, for mobile version there is an accordion, for desctop version it is transformed to tabs. To implement this approach, use the  <code>.lib-data-accordion()</code> mixin for mobile version, and the <code>.lib-data-tabs()</code> mixin for desctop version.
+//  Since tabs and accordion have same markup, they can transform one into other by means of CSS and JavaScript. This can be used for responsive web design. For instance, for mobile version there is an accordion, for desktop version it is transformed to tabs. To implement this approach, use the  <code>.lib-data-accordion()</code> mixin for mobile version, and the <code>.lib-data-tabs()</code> mixin for desktop version.
 //
 //  ```html
 //  <dl class="example-sections-4" data-sections="tabs">