doc/start: update documenting-ceph.rst

Add an article to documenting-ceph.rst in order to troubleshoot a
backporting problem.

Signed-off-by: Zac Dover <zac.dover@gmail.com>
(cherry picked from commit 1a7a5bc1f2a5c1bd39628e52d86c5ac546a6585e)

diff --git a/doc/start/documenting-ceph.rst b/doc/start/documenting-ceph.rst
index 9ed94dea4006fcf4e5208cd6544a39dabdeab8ec..e8a95e2ee8ff7c844225513e9b92fb966c127a0d 100644 (file)
--- a/doc/start/documenting-ceph.rst
+++ b/doc/start/documenting-ceph.rst
@@ -698,7 +698,7 @@ properly without this space.
 Linking Customs
 ~~~~~~~~~~~~~~~
 
-By custom established when Ceph was still being developed by Inktank,
+By a custom established when Ceph was still being developed by Inktank,
 contributors to the documentation of the Ceph project preferred to use the
 convention of putting ``.. _Link Text: ../path`` links at the bottom of the
 document and linking to them using references of the form ``:ref:`path```. This