Issue #3403933 by John Franklin: Add a 'url' key to the license sections of the libraries.yml file.

highlight.libraries.yml

@@ -4,6 +4,7 @@ highlight:
   license:
     name: MIT
     gpl-compatible: yes
+    url: https://opensource.org/license/mit/
   js:
     js/highlight.js: {}
   dependencies:
@@ -16,6 +17,7 @@ jquery.highlight-search-terms:
   license:
     name: MIT
     gpl-compatible: yes
+    url: https://opensource.org/license/mit/
   js:
     js/jquery.highlight.js: {}
   dependencies: