Update dashboard.html
Update dashboard.html

Added GCP instructions
pierotofy/WebODM,pierotofy/WebODM,tradr-project/WebODM,OpenDroneMap/WebODM,OpenDroneMap/WebODM,tradr-project/WebODM,OpenDroneMap/WebODM,OpenDroneMap/WebODM,tradr-project/WebODM,OpenDroneMap/WebODM,tradr-project/WebODM,pierotofy/WebODM,pierotofy/WebODM,pierotofy/WebODM,tradr-project/WebODM