src: update module version mismatch error message

Fixes: https://github.com/nodejs/node/issues/8379
PR-URL: https://github.com/nodejs/node/pull/8391


Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>