incorrect config path for netmask

[hpux735]

The config path for setting the net mask is wrong in the documentation and in the sample configuration files. The documentation says that the path is net.netmask, but that value is actually ignored. The proper path is net.mask. See line 67 in: Firmware/laser/global.cpp

[jrv]

Thanks for noticing. I updated the documentation and sample configuration files.