* chore: add zh global and dns docs
* chore: improve the explanation about tcp_check_url and udp_check_url
* chore: little modification about check_dns in zh global doc
* Delete global.md
Move to https://github.com/daeuniverse/dae/discussions/245
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Co-authored-by: Kevin Yu <31861128+yqlbu@users.noreply.github.com>
