When you post a link, you never close the tag. And then the entire entry is a big link, and that's a little hard to read because my settings - and, I'll guess, most people's settings - are for links to show up in a different sort of typeface from things that aren't links.

Most people only make a link for a few words or maybe a line or two, and then they close the tag.

https://www.w3schools.com/tags/tag_a.asp

What you're doing is you're doing the first part of the tag - the part that goes a href - but not the final part, the part that goes /a.