add missing period

Signed-off-by: Charles Smith <charles.smith@docker.com>

docs/admin/live-restore.md

@@ -36,7 +36,7 @@ Use your favorite editor to enable the `live-restore` option in the
 
 You have to send a `SIGHUP` signal to the daemon process for it to reload the
 configuration. For more information on how to configure the Docker daemon using
-config.json, see [daemon configuration file](../reference/commandline/dockerd.md#daemon-configuration-file)
+config.json, see [daemon configuration file](../reference/commandline/dockerd.md#daemon-configuration-file).
 
 * When you start the Docker daemon, pass the `--live-restore` flag: