doc: update behaviour of fs.writeFile
As per the decision in https://github.com/nodejs/node/issues/23433,
the fs.writeFile
will always write from the current position if it
is used with file descriptors. This patch updates it.
Checklist
-
make -j4 test
(UNIX), orvcbuild test
(Windows) passes -
documentation is changed or added -
commit message follows commit guidelines
cc @nodejs/fs @nodejs/tsc