Update about.html

Author: timgdavies

prefix_finder/frontend/templates/about.html

@@ -84,7 +84,7 @@ <h2 id="who-is-responsible">Who is responsible for org-id.guide?</h2>
       </div>
       <div class="about-page__half--right">
         <h2 id="history">History</h2>
-        <p>org-id.guides started as a sanctioned fork of the <a href="http://iatistandard.org/202/codelists/OrganizationRegistrationAgency/">IATI Registration Agency codelist</a> in September 2016. A full revision history of the register itself can be found via GitHub.
+        <p>org-id.guides started as a sanctioned fork of the <a href="http://iatistandard.org/202/codelists/OrganisationRegistrationAgency/">IATI Registration Agency codelist</a> in September 2016. A full revision history of the register itself can be found via GitHub.
       </div>
     </div>
   </main>