Update head.html

_includes/head.html

@@ -43,6 +43,7 @@
       "https://blog.privacytools.io",
       "https://twitter.com/privacytoolsIO",
       "https://social.privacytools.io/@privacytools",
+      "https://www.youtube.com/channel/UCen3taxHtzByXV8Da73B1Vg",
       "https://github.com/privacytoolsIO"
     ]
   }