WEBSITE-681 fix url in creativecommons.org

Author: Ed Costello

themes/mongodb/layout.html

@@ -275,7 +275,7 @@
       {%- if hasdoc('copyright') %}
         {% trans path=pathto('copyright'), copyright=copyright|e %}&copy; <a href="{{ path }}">Copyright</a> {{ copyright }} {% endtrans %}
       {%- else %}
-        {% trans copyright=copyright|e %}&copy; Copyright {{ copyright }} {% endtrans %} Licensed under <a href="http://creativecommons.org/licenses/by-nc-sa/3.0/%20">Creative Commons</a>.
+        {% trans copyright=copyright|e %}&copy; Copyright {{ copyright }} {% endtrans %} Licensed under <a href="http://creativecommons.org/licenses/by-nc-sa/3.0/">Creative Commons</a>.
       {%- endif %}
     {%- endif %}