M957 event type names don't match documentation

[OwenD]

The event names given on the documentation here don't work.
For example a heater fault says in the docs to use heaterFault
I have to use M957 E"heater_fault" D0 which will call heater-fault.g
Whereas in this thread, @DC42 said in 3.4 it would be M957 E"heater-fault"

It seems in the changes from heater_fault.g to heater-fault.g it's all got a bit out of sync.

Board: Duet 2 WiFi (2WiFi)
Firmware: RepRapFirmware for Duet 2 WiFi/Ethernet 3.4.0 (2022-03-15)
Duet WiFi Server Version: 1.26
Duet Web Control 3.4.0

[dc42]

@owend thanks for pointing this out. I have updated the M957 documentation.