Improve fontawesome detection

Check the [documentation](https://fontawesome.com/how-to-use/on-the-web/setup/upgrading-from-version-4)
for details.

src/apps.json

@@ -3533,6 +3533,7 @@
       ],
       "html": [
         "<link[^>]* href=[^>]+(?:([\\d.]+)/)?(?:css/)?font-awesome(?:\\.min)?\\.css\\;version:\\1",
+        "<link[^>]* href=\"https://use\\.fontawesome\\.com/releases/v(.+)/css/\\;version:\\1",
         "<script[^>]* src=[^>]+fontawesome(?:\\.js)?"
       ],
       "icon": "Font Awesome.png",