message: Fixed mistake in documentation of a ggo file
diff: @@ -4,7 +4,7 @@ purpose "Backprojects a volume according to a geometry file."
  option "verbose" v "Verbose execution" flag off
  option "config" - "Config file" string no
  option "geometry" g "XML geometry file name" string yes
  -option "output" o "Output projections file name" string yes
  +option "output" o "Output volume file name" string yes
  section "Projectors"
  option "bp" - "Backprojection method" values="VoxelBasedBackProjection","FDKBackProjection","FDKWarpBackProjection","Joseph","NormalizedJoseph","CudaFDKBackProjection","CudaBackProjection","CudaRayCast" enum no default="VoxelBasedBackProjection"
  