Fix typo in 2.12.4 release notes

Change-Id: I374ddc47fe9a92ef468a538fc7a0e5cea11db52b
diff --git a/ReleaseNotes/ReleaseNotes-2.12.4.txt b/ReleaseNotes/ReleaseNotes-2.12.4.txt
index 21ee41d..411011e 100644
--- a/ReleaseNotes/ReleaseNotes-2.12.4.txt
+++ b/ReleaseNotes/ReleaseNotes-2.12.4.txt
@@ -93,7 +93,7 @@
 
 * Fix `sshd.idleTimeout` setting being ignored.
 +
-Ths `sshd.idleTimeout` setting was not being correctly set on the SSHD
+The `sshd.idleTimeout` setting was not being correctly set on the SSHD
 backend, causing idle sessions to not time out.
 
 * link:https://bugs.chromium.org/p/gerrit/issues/detail?id=4324[Issue 4324]: