Docs: update ngcgui docs
Docs: update ngcgui docs

Signed-off-by: John Thornton <601166b5efca3d35ab1942428a84fb6f8bcae6cc@gnipsel.com>

Cid427/machinekit,ianmcmahon/linuxcnc-mirror,araisrobo/linuxcnc,ArcEye/machinekit-testing,narogon/linuxcnc,cnc-club/linuxcnc,bobvanderlinden/machinekit,unseenlaser/machinekit,Cid427/machinekit,ianmcmahon/linuxcnc-mirror,jaguarcat79/ILC-with-LinuxCNC,unseenlaser/linuxcnc,bobvanderlinden/machinekit,EqAfrica/machinekit,mhaberler/machinekit,unseenlaser/linuxcnc,mhaberler/machinekit,unseenlaser/machinekit,ikcalB/linuxcnc-mirror,ArcEye/MK-Qt5,bmwiedemann/linuxcnc-mirror,bobvanderlinden/machinekit,araisrobo/machinekit,cdsteinkuehler/MachineKit,bobvanderlinden/machinekit,EqAfrica/machinekit,Cid427/machinekit,cdsteinkuehler/MachineKit,bmwiedemann/linuxcnc-mirror,araisrobo/machinekit,strahlex/machinekit,ArcEye/machinekit-testing,cdsteinkuehler/linuxcnc,mhaberler/machinekit,ArcEye/machinekit-testing,ArcEye/machinekit-testing,ianmcmahon/linuxcnc-mirror,strahlex/machinekit,cdsteinkuehler/MachineKit,cdsteinkuehler/linuxcnc,narogon/linuxcnc,kinsamanka/machinekit,araisrobo/linuxcnc,bobvanderlinden/machinekit,bmwiedemann/linuxcnc-mirror,strahlex/machinekit,ikcalB/linuxcnc-mirror,mhaberler/machinekit,aschiffler/linuxcnc,Cid427/machinekit,EqAfrica/machinekit,mhaberler/machinekit,ianmcmahon/linuxcnc-mirror,ArcEye/machinekit-testing,mhaberler/machinekit,RunningLight/machinekit,cdsteinkuehler/MachineKit,ianmcmahon/linuxcnc-mirror,cdsteinkuehler/MachineKit,strahlex/machinekit,cdsteinkuehler/linuxcnc,araisrobo/machinekit,mhaberler/machinekit,cnc-club/linuxcnc,araisrobo/linuxcnc,araisrobo/machinekit,aschiffler/linuxcnc,unseenlaser/machinekit,RunningLight/machinekit,jaguarcat79/ILC-with-LinuxCNC,ArcEye/machinekit-testing,unseenlaser/linuxcnc,narogon/linuxcnc,ikcalB/linuxcnc-mirror,Cid427/machinekit,ianmcmahon/linuxcnc-mirror,cdsteinkuehler/linuxcnc,strahlex/machinekit,araisrobo/machinekit,ArcEye/MK-Qt5,unseenlaser/machinekit,strahlex/machinekit,Cid427/machinekit,ArcEye/MK-Qt5,bobvanderlinden/machinekit,ArcEye/MK-Qt5,kinsamanka/machinekit,RunningLight/machinekit,ArcEye/MK-Qt5,narogon/linuxcnc,ianmcmahon/linuxcnc-mirror,unseenlaser/machinekit,ArcEye/machinekit-testing,bmwiedemann/linuxcnc-mirror,araisrobo/machinekit,ikcalB/linuxcnc-mirror,jaguarcat79/ILC-with-LinuxCNC,kinsamanka/machinekit,cnc-club/linuxcnc,bmwiedemann/linuxcnc-mirror,ArcEye/MK-Qt5,cdsteinkuehler/linuxcnc,unseenlaser/machinekit,araisrobo/machinekit,ArcEye/MK-Qt5,kinsamanka/machinekit,Cid427/machinekit,EqAfrica/machinekit,unseenlaser/machinekit,unseenlaser/linuxcnc,bobvanderlinden/machinekit,aschiffler/linuxcnc,narogon/linuxcnc,unseenlaser/linuxcnc,cnc-club/linuxcnc,ArcEye/machinekit-testing,RunningLight/machinekit,bmwiedemann/linuxcnc-mirror,bmwiedemann/linuxcnc-mirror,kinsamanka/machinekit,EqAfrica/machinekit,EqAfrica/machinekit,aschiffler/linuxcnc,cnc-club/linuxcnc,ikcalB/linuxcnc-mirror,araisrobo/machinekit,Cid427/machinekit,kinsamanka/machinekit,RunningLight/machinekit,RunningLight/machinekit,jaguarcat79/ILC-with-LinuxCNC,kinsamanka/machinekit,ArcEye/MK-Qt5,kinsamanka/machinekit,cdsteinkuehler/linuxcnc,EqAfrica/machinekit,araisrobo/linuxcnc,aschiffler/linuxcnc,ikcalB/linuxcnc-mirror,RunningLight/machinekit,araisrobo/linuxcnc,strahlex/machinekit,mhaberler/machinekit,bobvanderlinden/machinekit,EqAfrica/machinekit,RunningLight/machinekit,jaguarcat79/ILC-with-LinuxCNC,ikcalB/linuxcnc-mirror,cdsteinkuehler/MachineKit,cnc-club/linuxcnc,unseenlaser/machinekit,cnc-club/linuxcnc,araisrobo/machinekit