Utilise (type) check for police jobs, add 'ambulance' job to stress whitelist. Typo fix.

[GitMocha]

Description

Utilises the '.type' check for police job, for those servers who have multiple departments rather then having multiple 'job.name' checks. I've also added 'ambulance' job and reflected the change by renaming 'Config.DisablePoliceStress' to 'Config.DisableEmsStress'.

Checklist

• [X] I have personally loaded this code into an updated qbcore project and checked all of its functionality.
• [X] My code fits the style guidelines.
• [X] My PR fits the contribution guidelines.