fix hit

assets/index.html

@@ -80,7 +80,7 @@
     </form>
     <div class="help">
       <ul>
-	<li>If you using Firefox, Press the CTRL+S key to save image. "Save Image" option doesn't work.</li>
+	<li>If you are using Firefox, Please press the CTRL+S key to save image. "Save Image" option doesn't work.</li>
       </ul>
     </div>
   </body>