Point to correct certificate for NPM

[priyankub]

Current build fails to reach out to LAPI at a remote location if LAPI is accessible through a URL eg. https://crowdsec.local.example.com. It works only if LAPI is reached through its IP with 8080 port exposed, thereby preferring a relative less secure implementation. This will solve https://github.com/LePresidente/docker-nginx-proxy-manager/issues/19