Update notes for submitted changes

* Use Map interface instead of ConcurrentHashMap class

0f/442d70836ee292ed916605448f806cc7d1fe78

@@ -0,0 +1,7 @@
+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: Fri, 01 Jan 2021 15:19:21 -0500
+Reviewed-on: https://git.eclipse.org/r/c/jgit/jgit/+/174151
+Project: jgit/jgit
+Branch: refs/heads/master