PC Doctor Module does scan your system but it is not supposed to use your webcam. So, if it is doing that, you should scan it for viruses or malware. Since it is Kaspersky that's showing the notification, you can use it to run the much-needed scan. If the antivirus shows that process is a virus and ask you to remove it, do that and restart your computer. In case, it is a genuine process that is the Dell SupportAssist then you should either stop the Automatic scan (check the first solution) or uninstall the app immediately and report the issue to Dell.