[Plugin: Facebook Likes You!] symbol

Hello
when I use the button to share a post or the website, it add the simbol << at the blog title, and I cannot remove it.

i.e.:

Blog title is : This is My Website
Sharing in facebook : << This is My Website

I saw that the problem is this:

<meta property=”og:title” content=” « This is My Website”/>

is it possible to remove « from og:title ??

thanks a lot!

https://www.ads-software.com/extend/plugins/facebook-likes-you/