doc : being more explicit in the synopsis
Assuming less knowledge on the part of the reader, making it easier to for starters.
Fixes: https://github.com/nodejs/node/issues/17970, https://github.com/nodejs/help/issues/1049
Checklist
-
make -j4 test
(UNIX), orvcbuild test
(Windows) passes -
documentation is changed or added -
commit message follows commit guidelines
Affected core subsystem(s)
fs