virsh qemu-monitor-command --hmp help information missing  inject-nmi for watchdog_action
Description of problem:
watchdog_action missing inject-nmi which already supported in Commit [795dc6e4](https://gitlab.com/qemu-project/qemu/-/commit/795dc6e46d953d70b4b7ddd3f4956f8f4b9d8565)
Steps to reproduce:
1. virsh qemu-monitor-command <id> --hmp help |grep watchdog
2. change watchdog action to inject-nmi