doc/glossary: add oxford comma to "Cluster Map"

Add an Oxford comma to a list under the "Cluster Map" headword in the
glossary, so that it doesn't read like "I'd like to thank my parents,
Ayn Rand and God."

Signed-off-by: Zac Dover <zac.dover@gmail.com>
(cherry picked from commit 75b567d8e5b17735d4123b11846deaa99b001f4d)

diff --git a/doc/glossary.rst b/doc/glossary.rst
index 80328128838a764b15a931dbc7e423d0d45c7c2e..6d33caceb8349dc34df0702e291c7fca3b3409d7 100644 (file)
--- a/doc/glossary.rst
+++ b/doc/glossary.rst
@@ -164,7 +164,7 @@
 
        Cluster Map
                 The set of maps comprising the monitor map, OSD map, PG map,
-                MDS map and CRUSH map, which together report the state of the
+                MDS map, and CRUSH map, which together report the state of the
                 Ceph cluster. See :ref:`the "Cluster Map" section of the
                 Architecture document<architecture_cluster_map>` for details.