Add license url

Closes #3478429

beautytips.libraries.yml

@@ -20,10 +20,11 @@ beautytips.bt-custom-style:
     - core/drupal
 
 beautytips-jquery:
-  remote: http://github.com/richardscarrott/jquery-ui-carousel
+  remote: 'http://github.com/richardscarrott/jquery-ui-carousel'
   version: 0.9.5-rc1
   license:
     name: MIT
+    url: 'https://opensource.org/licenses/MIT'
     gpl-compatible: true
   js:
     js/jquery.bt.js: {}
@@ -39,10 +40,11 @@ beautytips-module:
     - beautytips/beautytips-jquery
 
 excanvas_r3:
-  remote: http://excanvas.sourceforge.net
+  remote: 'http://excanvas.sourceforge.net'
   version: r3
   license:
     name: MIT
+    url: 'https://opensource.org/licenses/MIT'
     gpl-compatible: true
   js:
     other_libs/excanvas_r3/excanvas.compiled.js: {}