Page Names are preceeded by a colon

I’m not sure what I did or where, but all my page names are preceeded with a colon : symbol in front of them. If you visit my site, look at the bottom of your screen where it shows all your open browser windows, and you’ll see the : in front of my page names.

Not sure what I did, but would appreciate it if someone can tell me what file I need to fix, and what I’m looking for.

Thanks much!

https://www.joaniemoore.com