test: Issue #15596 document `test/common/dns`
test: Issue #15596 (closed) document test/common/dns
Added requested documentation for the dns.js module. Also fixed a typo.
Please review for accuracy.
Fixes: https://github.com/nodejs/node/issues/15596
Checklist
-
make -j4 test
(UNIX), orvcbuild test
(Windows) passes -
documentation is changed or added -
commit message follows commit guidelines
Affected core subsystem(s)
- Version: v9.0.0-pre
- Platform: n/a
- Subsystem: test