Fix the 13.0.0 newton release note

The formatting in the 'other' section wasn't what was
expected, this fixes it to use ReST format.

Change-Id: I9d763dffd872a92ca4adf612a9cca9156ee7e5a3
diff --git a/releasenotes/notes/13.0.0-start-of-newton-support-3ebb274f300f28eb.yaml b/releasenotes/notes/13.0.0-start-of-newton-support-3ebb274f300f28eb.yaml
index 701920c..b9b6fb5 100644
--- a/releasenotes/notes/13.0.0-start-of-newton-support-3ebb274f300f28eb.yaml
+++ b/releasenotes/notes/13.0.0-start-of-newton-support-3ebb274f300f28eb.yaml
@@ -2,8 +2,9 @@
 prelude: >
     This release is marking the start of Newton release support in Tempest
 other:
-  - OpenStack releases supported at this time are **Liberty**, **Mitaka**,
-    and **Newton**
+  - |
+    OpenStack releases supported at this time are **Liberty**, **Mitaka**,
+    and **Newton**.
 
     The release under current development as of this tag is Ocata,
     meaning that every Tempest commit is also tested against master during