How do I get rid of the html code that appears in the link when I share my site on Facebook?

When I share a link of my site on Facebook, it shows up like this under the photo (see below). I’d like to delete the html code. How do I do so?

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You may use these HTML tags and attributes: <?a href=”” title=””> <?abbr title=””> <?acronym title=””> <?b> <?blockquote cite=””> <?cite>…