message: Fix material UI TextField inputRef example
diff: @@ -184,7 +184,7 @@ export default {
  <code>register</code> to it.
  </p>
  <p>
  - <code>{'<TextField ref={register} name="FirstName"/>'}</code>
  + <code>{'<TextField inputRef={register} name="FirstName"/>'}</code>
  </p>
  <p>
  <b className={typographyStyles.note}>Option 2:</b> Sometimes
  