op-build v2.5 release notes

Signed-off-by: Klaus Heinrich Kiwi <klaus@linux.vnet.ibm.com>
diff --git a/doc/release-notes/index.rst b/doc/release-notes/index.rst
index 7399ddd..86cd23b 100644
--- a/doc/release-notes/index.rst
+++ b/doc/release-notes/index.rst
@@ -95,3 +95,4 @@
     :maxdepth: 1
 
     v2.5-rc1
+    v2.5