Set meta og:image to Creative Commons logo

Signed-off-by: Olga Bulat <obulat@gmail.com>

Author: obulat

public/index.html

@@ -14,7 +14,7 @@
     <meta property="og:title" content="Choose a License" />
     <meta property="og:type" content="website">
     <meta property="og:description" content="Want to license your work with Creative Commons, but not sure where to start, or which license is right for you? Use our license chooser!" />
-    <meta property="og:image" content="https://d15omoko64skxi.cloudfront.net/wp-content/uploads/2016/05/cc-site-icon-300x300.png" />
+    <meta property="og:image" content="https://mirrors.creativecommons.org/presskit/logos/cc.logo.large.png" />
     <meta property="og:locale" content="en_US" />
     <meta property="og:locale:alternate" content="ru_RU" />
     <title>Creative Commons License Chooser</title>