Update docs/source/index.rst

Co-authored-by: Seena Fallah <[email protected]>

docs/source/index.rst

@@ -95,7 +95,7 @@ The ``main`` branch should be considered experimental and used with caution.
 
 - ``stable-7.0`` Supports Ceph version ``quincy``. This branch requires Ansible version ``2.15``.
 
-- ``stable-8.0`` Supports Ceph version ``reef``. This branch requires Ansible version ``2.15``.
+- ``stable-8.0`` Supports Ceph version ``reef``. This branch requires Ansible version ``2.15`` or ``2.16``.
 
 - ``main`` Supports the main (devel) branch of Ceph. This branch requires Ansible version ``2.15`` or ``2.16``.