It’s not just the text in Site Reviews, it’s happening all over your page.
The reason this is happening is because you have
<u></u> tags sprinkled all over your HTML (https://developer.mozilla.org/en-US/docs/Web/HTML/Element/u).
Check if you are using custom HTML on your page and make sure that there are no stray
<u> tags lying around. Better still, remove the
<u> tags and use CSS to underline text instead.