Manual.rst: Update tablesorter `class="sorter-false"`

Documentation/Manual.rst

@@ -7452,8 +7452,8 @@ Customization of tablesorter:
 
 * Add the desired classes or data attributes to your table html, e.g.:
 
-  * `data-sorter="false"` on a '<th>' to disable sorting on that column
-  * `class="filter-false"` on a '<th>' to hide the filter field for that column
+  * Disable sorting `class="sorter-false"` on a '<th>' to disable sorting on that column (or: `data-sorter="false"`).
+  * Disable filter `class="filter-false"` on a '<th>' to hide the filter field for that column
   * see docs for more options: https://mottie.github.io/tablesorter/docs/index.html
 
 * You can pass in a default configuration object for the main `tablesorter()` function by using the attribute