Update docs for file-size => file-size-sort

Author: kyle-wannacott

public/docs/classes.html

@@ -117,7 +117,7 @@ <h2>table-sort-js</h2>
               </td>
             </tr>
             <tr>
-              <td>file-size</td>
+              <td>file-size-sort</td>
               <td>
                 Supports sorting files sizes from bytes to Tebibytes (B -&gt; TiB).
                 Can be Metric prefix (e.g 10KB), or Binary prefix(e.g 25KiB) and
@@ -166,7 +166,7 @@ <h3>Example using tags:</h3>
   &lt;thead&gt;
     &lt;tr&gt;
       &lt;th class="data-sort"&gt;data&lt;/th&gt;
-      &lt;th class="file-size"&gt;file sizes&lt;/th&gt;
+      &lt;th class="file-size-sort"&gt;file sizes&lt;/th&gt;
       &lt;th class="order-by-desc"&gt;birth date&lt;/th&gt;
       &lt;th class="disable-sort"&gt;unsortable&lt;/th&gt;
     &lt;/tr&gt;
@@ -198,7 +198,7 @@ <h3>Example using tags:</h3>
   <thead>
     <tr>
       <th class="data-sort">data</th>
-      <th class="file-size">file sizes</th>
+      <th class="file-size-sort">file sizes</th>
       <th class="order-by-desc">birth date</th>
       <th class="disable-sort">unsortable</th>
     </tr>

public/docs/demo.html

@@ -73,7 +73,7 @@ <h2>table-sort-js</h2>
               <th>Money</th>
               <th>Dates</th>
               <th>Release version</th>
-              <th class="file-size order-by-desc">File-size</th>
+              <th class="file-size-sort order-by-desc">File-size-sort</th>
             </tr>
             </thead>
             <tr>