customize contributors project name

Author: maximthomas

_includes/contributors.html

@@ -1,5 +1,6 @@
 <div class="contributors">
     <h4>Contributors</h4>
-    <object data="https://opencollective.com/{{page.reponame}}/contributors.svg?width=890" type="image/svg+xml">
+    <object data="https://opencollective.com/{{page.contributors_project | default: page.reponame}}/contributors.svg?width=890" type="image/svg+xml">
     </object>
+    
 </div>

openicf.md

@@ -4,6 +4,7 @@ title: OpenICF - Open Indentity Gateway
 description: OpenICF - Open Source reserve proxy server with
 keywords: OpenIG, Indentity Gateway, reverse proxy, session management, credential replay, Open Identity Platform
 reponame: OpenICF
+contributors_project: OpenIDM
 ---
 <div class="container text-center mb-4">
     <a target="_blank" href="https://github.com/OpenIdentityPlatform/OpenICF">