readme usage mistake

[zhisme]

Hello, you have one mistake in usage section. Second div not closed.

<div class="hint--html hint--top">
  Place here any element
  <div class="hint__content">
    Place here your tooltip HTML content
  `<div>`
 >>>> `</div>`
</div>

[zhisme]

Also in other sections the same mistake.

[istarkov]

Thank you!!! Fixed

[ckim16]

Your examples still have this typo.

But still appreciate this cool repo :)