[JAMES-4175] fix distributed server source configuration

doc-sites/antora-playbook.yml

diff --git a/doc-sites/antora-playbook.yml b/doc-sites/antora-playbook.yml
index 7b680a7..788c0ab 100644
--- a/doc-sites/antora-playbook.yml
+++ b/doc-sites/antora-playbook.yml
@@ -23,6 +23,11 @@
       branches: 3.7.x
       start_path: docs
       edit_url: "{web_url}/blob/{refname}/{path}"
+    # distributed server
+    - url: https://github.com/apache/james-project.git
+      branches: 3.9.x
+      start_path: server/apps/distributed-app/docs
+      edit_url: "{web_url}/blob/{refname}/{path}"
     - url: https://github.com/apache/james-project.git
       branches: 3.8.x
       start_path: server/apps/distributed-app/docs
@@ -31,10 +36,6 @@
       branches: 3.7.x
       start_path: server/apps/distributed-app/docs
       edit_url: "{web_url}/blob/{refname}/{path}"
-    - url: https://github.com/apache/james-project.git
-      branches: master
-      start_path: server/apps/distributed-app/docs
-      edit_url: "{web_url}/blob/{refname}/{path}"
     - url: ./../
       branches: HEAD
       start_path: docs