URL address update in notification required

Dear All

We are using PSFSCM 9.2 PT 8.53 and zero image update. Kindly guide as to where to change the URL address in the notification emails sent by system for the approval workflows. As the following email which is copy/pasted below is from the stage environment of ours and not from the production environment and thus we would like to change all of these auto notifications URL address to be changed from psfscm.habib.edu.pk to the appropriate stage.habib.edu.pk. Kindly also guide is this needs to be done at one place only or different for different for different approval workflows as currently we