更新 README.md，修正 syncthing Docker 命令中的挂载路径，并添加文件夹路径输出

stacks/syncthing/README.md

@@ -1,4 +1,4 @@
-# sything
+****# sything
 [![Try in PWD](https://raw.githubusercontent.com/play-with-docker/stacks/master/assets/images/button.png)](http://play-with-docker.com?stack=https://raw.githubusercontent.com/yanhao98/docker-example/refs/heads/main/stacks/sything/docker-compose-pwd.yml)
 ```bash
 wget https://raw.githubusercontent.com/yanhao98/docker-example/refs/heads/main/stacks/sything/docker-compose.yml && docker-compose up -d
@@ -9,14 +9,16 @@ wget https://raw.githubusercontent.com/yanhao98/docker-example/refs/heads/main/s
 HOSTNAME=服务器主机名
 SOURCE1=/path/to/backup1
 
+TARGET1="/host$SOURCE1"
 docker run -d --restart unless-stopped --name syncthing \
   -h $HOSTNAME \
-  --mount type=bind,source=$SOURCE1,target="/host$SOURCE1" \
+  --mount type=bind,source=$SOURCE1,target=$TARGET1 \
   --mount type=volume,source=st-sync-cfg,target=/var/syncthing/config \
-  -e PUID=0 -e PGID=0 \
-  -e TZ=Asia/Shanghai \
+  -e PUID=0 -e PGID=0 -e TZ=Asia/Shanghai \
   -p 28198:8384 -p 22000:22000/tcp -p 22000:22000/udp -p 21027:21027/udp \
   syncthing/syncthing
+
+echo -e "\n Folder Path: $TARGET1 \n"
 ```
 
 - 访问`https://服务器ip:28198`