doc: fix short underline on release-notes

Signed-off-by: Alfredo Deza <adeza@redhat.com>
ceph · Aug 16, 2017 · 457754e · 457754e
1 parent f78a991
commit 457754e
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/doc/release-notes.rst b/doc/release-notes.rst
@@ -703,7 +703,7 @@ Notable Changes
 
 
 v12.1.3 Luminous (RC)
-====================
+=====================
 
 This is the fourth release candidate for Luminous, the next long term stable
 release.