Make typography consistent with previous ChangeLog entries.

ChangeLog

 version 0.9.10 -- UNRELEASED
-    backupninja changes:
+    backupninja changes
 	 . Fix email reports, that were broken by the new locking support.
-    handler changes:
+    handler changes
 	dup:
 	 . Cleanup: stop supporting duplicity < 0.6.01 (Redmine#2538).
 	 . Fix incorrect duplicity version check for keepincroffulls.
@@ -15,7 +15,7 @@ version 0.9.10 -- UNRELEASED
 	sh:
 	 . Allow 'when = XXX' with spaces (Redmine#2769).
 	   Thanks to aihtdikh for the patch.
-    helper changes:
+    helper changes
 	rdiff:
 	 . Fix infinite loop when version inconsistency is detected.
 	   Thanks to Chris Lamb <lamby@debian.org> for the patch.