Man pages matching name probe::sunrpc.sched.release_task in section 3stap:

probe::sunrpc.sched.release_task.3stap.en	debian 10 / systemtap-doc
probe::sunrpc.sched.release_task.3stap.en	debian 11 / systemtap-doc
probe::sunrpc.sched.release_task.3stap.en	debian 12 / systemtap-doc