cli: add --prof flag description to node --help command
As suggested at https://github.com/nodejs/node/issues/16459#issuecomment-389742818, I added description about --flag
option into node --help
command.
Closes: https://github.com/nodejs/node/issues/16459
Checklist
-
make -j4 test
(UNIX), orvcbuild test
(Windows) passes -
[ ] tests and/or benchmarks are includedI think it's necessary for this change -
documentation is changed or added -
commit message follows commit guidelines