title: Edit Facebook share title and description
body: <p>how do you edit the title and description of a specific link in your website when you share it on your facebook wall? For example I have a link in my website that opens a pdf file in a new tab, and I copied and paste the link in my facebook wall, but the title and description is showing the link. I know we use the <code>&lt;meta property="og:title" content="title"&gt;</code> and all those other meta property, but how do we use it in a specific link in our website? for example like sharing a link in facebook that opens pdf file in my website?</p>