Switchs docs to load from jsdelivr

This should hopefully fix the issue we were seeing where the docs
would not render properly immediately after a release because CDNjs
has a delay in updating versions. jsdelivr does not have this delay,
so we shouldn't have any many rendering issues.

Author: kevin-brown

docs/pages/13.i18n/docs.md

@@ -7,7 +7,7 @@ process:
 never_cache_twig: true
 ---
 
-{% do assets.addJs('https://cdnjs.cloudflare.com/ajax/libs/select2/4.0.11/js/i18n/es.js', 90) %}
+{% do assets.addJs('https://cdn.jsdelivr.net/npm/select2@4.0.10/dist/js/i18n/es.js', 90) %}
 
 ## Message translations
 

docs/themes/site/templates/partials/base.html.twig

@@ -17,7 +17,7 @@
         {% do assets.addCss('theme://css/custom.css',100) %}
         {% do assets.addCss('theme://css/font-awesome.min.css',100) %}
         {% do assets.addCss('theme://css/featherlight.min.css') %}
-        {% do assets.addCss('https://cdnjs.cloudflare.com/ajax/libs/select2/4.0.11/css/select2.min.css') %}
+        {% do assets.addCss('https://cdn.jsdelivr.net/npm/select2@4.0.11/dist/css/select2.min.css') %}
         {% do assets.addCss('theme://css/s2-docs.css', 100) %}
         {% do assets.addCss('theme://css/theme.css',100) %}
 
@@ -33,7 +33,7 @@
     {% block javascripts %}
         {% do assets.addJs('jquery',101) %}
         {% do assets.addJs('theme://js/modernizr.custom.71422.js',100) %}
-        {% do assets.addJs('https://cdnjs.cloudflare.com/ajax/libs/select2/4.0.11/js/select2.full.min.js', 100) %}
+        {% do assets.addJs('https://cdn.jsdelivr.net/npm/select2@4.0.11/dist/js/select2.full.min.js', 100) %}
         {% do assets.addJs('https://cdn.rawgit.com/google/code-prettify/master/loader/run_prettify.js', 100) %}
         {% do assets.addJs('theme://js/featherlight.min.js') %}
         {% do assets.addJs('theme://js/clipboard.min.js') %}