Man pages matching name probe::sunrpc.svc.process in section 3stap:

probe::sunrpc.svc.process.3stap.en	debian 10 / systemtap-doc
probe::sunrpc.svc.process.3stap.en	debian 11 / systemtap-doc
probe::sunrpc.svc.process.3stap.en	debian 12 / systemtap-doc