Apply suggestions from code review

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: bytemain

docs/zh-hans/plugins/library/archiver.md

@@ -4,7 +4,6 @@
 例如：
 
 **Usage**
-```shell
 local archiver = require("vfox.archiver")
 local err = archiver.decompress("testdata/test.zip", "testdata/test")
 ```