chore(os_baseline): update timesyncd.conf to latest release

roles/os_baseline/templates/etc/systemd/timesyncd.conf.j2

@@ -8,9 +8,13 @@
 #  any later version.
 #
 # Entries in this file show the compile time defaults. Local configuration
-# should be created by either modifying this file, or by creating "drop-ins" in
-# the timesyncd.conf.d/ subdirectory. The latter is generally recommended.
-# Defaults can be restored by simply deleting this file and all drop-ins.
+# should be created by either modifying this file (or a copy of it placed in
+# /etc/ if the original file is shipped in /usr/), or by creating "drop-ins" in
+# the /etc/systemd/timesyncd.conf.d/ directory. The latter is generally
+# recommended. Defaults can be restored by simply deleting the main
+# configuration file and all drop-ins located in /etc/.
+#
+# Use 'systemd-analyze cat-config systemd/timesyncd.conf' to display the full config.
 #
 # See timesyncd.conf(5) for details.