doc: fix linting command for vcbuild

Currently, `vcbuild` only supports `jslint`. `vcbuild lint` will not
work because there is no `lint` task specified in `vcbuild.bat`. Update
documentation to use `vcbuild jslint` instead.

PR-URL: https://github.com/nodejs/node/pull/11151


Reviewed-By: Nikolai Vavilov <vvnicholas@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>