message: improve doc on register name
diff: @@ -270,9 +270,9 @@ export default {
  </p>
  <p>
  <b className={typographyStyles.note}>Important:</b> <code>name</code>{" "}
  - is <b>required</b> and <b>unique</b> (can not start with a number).
  - Input name also supports dot and bracket syntax, which allows you to
  - easily create nested form fields.
  + is <b>required</b> and <b>unique</b> (can not start with a number or
  + use it as key name). Input name also supports dot and bracket syntax,
  + which allows you to easily create nested form fields.
  </p>
  </>
  ),
  