Update Donation URL

Author: mzagaja

_config.yml

@@ -26,7 +26,7 @@ defaults:
     values:
       layout: post
 # NOTE:If you change the below donate_url you should also update the URL here: https://github.com/codeforboston/.github/FUNDING.yml
-donate_url: https://codeforamerica.org/donate-to-a-brigade?utm_campaign=Code%20for%20Boston&utm_source=codeforboston.org
+donate_url: https://opencollective.com/code-for-boston/donate?interval=oneTime&amount=20&name=&legalName=&email=
 hackpad_url: https://codeforboston.hackpad.com/
 twitter_url: https://twitter.com/codeforboston
 threads_url: http://threads.net/@codeforboston

_includes/header.html

@@ -21,7 +21,7 @@
             {% endif %} {% endfor %}
             <li>
               <a
-                href="{{ site.baseurl }}/donate/"
+                href="{https://opencollective.com/code-for-boston/donate?interval=oneTime&amount=20&name=&legalName=&email="
                 class="btn-primary btn--small"
               >
                 Donate