Update export-or-backup-using-dumpling.md

pingcap · sre-bot · May 26, 2020 · May 19, 2020 · May 19, 2020 · May 20, 2020
commit 3b389f1588b2c40ce3021cc1ac989f7e922f224b
diff --git a/export-or-backup-using-dumpling.md b/export-or-backup-using-dumpling.md
@@ -84,7 +84,7 @@ dumpling \
 
 一切完成之后，你应该可以在 `/tmp/test` 看到导出的文件了：
 
-``` shell
+```shell
 $ ls -lh /tmp/test | awk '{print $5 "\t" $9}'
 
 140B  metadata