Add missing license

Author: kraih

lib/Mojolicious.pm

@@ -776,6 +776,11 @@ Licensed under the BSD License, L<https://github.com/highlightjs/highlight.js/bl
 
 Licensed under the MIT License, L<http://creativecommons.org/licenses/MIT>.
 
+=head2 Font Awesome
+
+Licensed under the CC-BY License, Version 4.0 L<https://creativecommons.org/licenses/by/4.0/> and SIL OFL, Version 1.1
+L<https://opensource.org/licenses/OFL-1.1>.
+
 =head1 CODE NAMES
 
 Every major release of L<Mojolicious> has a code name, these are the ones that have been used in the past.