Fixing apostrophe's in links

Hello,

I have links to older articles on my site https://www.getyourfilmfix.com in a sidebar widget towards the bottom of my pages. Any links with apostrophes or quotes in the title are showing up with one of the following: 's or "

I think I’ve read that there’s a php code of some sort that can be added to fix this problem but being the novice that I am, I need the most basic and simple instructions anyone can provide.

Thanks in advance.