Manual.rst: characterCountWrap documented

extension/Documentation/Manual.rst

@@ -1389,6 +1389,8 @@ Type: text
   * *retype* = 1 (optional): Current input element will be rendered twice. The form can only submitted if both elements are equal.
   * *retypeLabel* =<text> (optional): The label of the second element.
   * *retypeNote* =<text> (optional): The note of the second element.
+  * *characterCountWrap* = <text1>|<text2> (optional). Displays a character counter below the input/textarea element. If
+    `text1` / `text2` is missing, just display `<current>/</max>`. Customization: `characterCountWrap=<div class=qfq-cc-style>Count: |</div>`
   * Also check the  :ref:`fe-parameter-attributes` *data-...-error* to customize error messages shown by the validator.