[zh] Update volumes.md

Signed-off-by: xin.li <[email protected]>

Author: my-git9

content/zh/docs/concepts/storage/volumes.md

@@ -438,7 +438,7 @@ metadata:
 spec:
   containers:
     - name: test
-      image: busybox
+      image: busybox:1.28
       volumeMounts:
         - name: config-vol
           mountPath: /etc/config
@@ -1836,7 +1836,7 @@ spec:
         fieldRef:
           apiVersion: v1
           fieldPath: metadata.name
-    image: busybox
+    image: busybox:1.28
     command: [ "sh", "-c", "while [ true ]; do echo 'Hello'; sleep 10; done | tee -a /logs/hello.txt" ]
     volumeMounts:
     - name: workdir1