Clarify user option re-format like number does not work on Shorts

Extensions/combined/popup.html

@@ -108,7 +108,7 @@
     <span class="switchLabel">Show rounded down numbers</span>
   </label>
   <br/>
-  <label class="switch" data-hover="Make likes and dislikes format consistent">
+  <label class="switch" data-hover="Make likes and dislikes format consistent (does not work on Shorts)">
     <input type="checkbox" id="number_reformat_likes"/>
     <span class="slider"/>
     <span class="switchLabel">Re-format like numbers</span>