doc: removed number of jobs from -j option when running make
Checklist
-
make -j test
(UNIX), orvcbuild test nosign
(Windows) passes -
documentation is changed or added -
commit message follows commit guidelines
Affected core subsystem(s)
doc
Description of change
Removing specified number of jobs from -j option in the documentation steps for running the make command. A '-j' without a number specified will use the maximum number allowed for any given machine. Fixes: https://github.com/nodejs/node/issues/8286