op-build v2.3-rc1 release notes

Signed-off-by: Stewart Smith <stewart@linux.ibm.com>
diff --git a/doc/release-notes/index.rst b/doc/release-notes/index.rst
index a21fa48..c18d369 100644
--- a/doc/release-notes/index.rst
+++ b/doc/release-notes/index.rst
@@ -66,3 +66,11 @@
    v2.2-rc1
    v2.2-rc2
    v2.2
+
+v2.3
+----
+
+ .. toctree::
+   :maxdepth: 1
+
+   v2.3-rc1