Update notes for submitted changes

* Documentation/technical/reftable: change suggested file names

cf/11a03bc267fa86aa5dc538ff0ffc777d659c8a

@@ -0,0 +1,9 @@
+Code-Review+1: David Pursehouse <david.pursehouse@gmail.com>
+Code-Review+2: Jonathan Nieder <jrn@google.com>
+Code-Review+2: Matthias Sohn <matthias.sohn@sap.com>
+Verified+1: JGit Bot <jgit-bot@eclipse.org>
+Submitted-by: Matthias Sohn <matthias.sohn@sap.com>
+Submitted-at: Wed, 30 Oct 2019 09:01:26 -0400
+Reviewed-on: https://git.eclipse.org/r/148142
+Project: jgit/jgit
+Branch: refs/heads/master