Highlight wrong characters in typing quiz#97

タイピングの解答表示において、間違った箇所がハイライト等、強調されると時間の節約になると思います。

Translation of Proton.1’s original feedback:

In the typing answer display, it would save time if the wrong part is highlighted or otherwise emphasized.

@Proton.1
ご意見ありがとうございました。実装はちょっと難しいかもしれませんね。しかし、確かにクールな機能でしょう。
thank you very much for your feedback. I think it might be a bit difficult to implement this. But it certainly would be a cool feature.

User Adam wrote on the merged requestion #230:

When you are close but incorrect (the yellow answer), highlight with underline (or similar) to show what you got wrong. This will help greatly in correcting small mistakes when you have almost learned a word