doc: hide undocumented object artifacts in async_hooks examples
The examples show process.stdout.fd
as a means to use synchronous writes
in async_hooks context. However this is an undocumented field, so showcase
a file write example instead.
Fixes: https://github.com/nodejs/node/issues/22873
/cc @vsemozhetbyt @bnoordhuis @nodejs/documentation
Checklist
-
make -j4 test
(UNIX), orvcbuild test
(Windows) passes -
tests and/or benchmarks are included -
documentation is changed or added -
commit message follows commit guidelines