[1.1.x] Add M420 C to center the mesh#10521

thinkyhead merged 1 commit intoMarlinFirmware:bugfix-1.1.xMarlinFirmware/Marlin:bugfix-1.1.xfrom

thinkyhead:bf1_correct_the_meshthinkyhead/Marlin:bf1_correct_the_meshCopy head branch name to clipboard