verify: Update readPrimaryGPT according to README
verify: Update readPrimaryGPT according to README

See a90af5a39ccb23e12e56e235fd9a906baf3d5392

Signed-off-by: Arnaud Rebillout <4cd336a9881d78eb7ef80e3459bf7ce4b51750e2@collabora.com>

jhermsmeier/node-gpt