build: use generic names for linting tasks

"jslint" is the name of a tool that actually is not used, which can
cause confusion.

PR-URL: https://github.com/nodejs/node/pull/15272


Reviewed-By: Roman Reiss <me@silverwind.io>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Gibson Fahnestock <gibfahn@gmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Alexey Orlenko <eaglexrlnk@gmail.com>