STYLE: ensure help for -dict matches its intended usage

...ons/utilities/mesh/advanced/collapseEdges/collapseEdges.C

applications/utilities/mesh/advanced/modifyMesh/modifyMesh.C

...eration/extrude/extrudeToRegionMesh/extrudeToRegionMesh.C

...s/utilities/mesh/generation/snappyHexMesh/snappyHexMesh.C

...utilities/mesh/manipulation/createBaffles/createBaffles.C

...ons/utilities/mesh/manipulation/createPatch/createPatch.C

...tions/utilities/mesh/manipulation/mirrorMesh/mirrorMesh.C

...tions/utilities/mesh/manipulation/refineMesh/refineMesh.C

...s/utilities/mesh/manipulation/renumberMesh/renumberMesh.C

...tions/utilities/mesh/manipulation/stitchMesh/stitchMesh.C

applications/utilities/mesh/manipulation/topoSet/topoSet.C

applications/utilities/postProcessing/noise/noise.C

...ilities/preProcessing/changeDictionary/changeDictionary.C

...CoupledPatchGeometry/createExternalCoupledPatchGeometry.C

...utilities/preProcessing/faceAgglomerate/faceAgglomerate.C

applications/utilities/preProcessing/setFields/setFields.C

applications/utilities/surface/surfaceHookUp/surfaceHookUp.C

...utilities/surface/surfaceMeshConvert/surfaceMeshConvert.C

...s/utilities/surface/surfaceMeshExport/surfaceMeshExport.C

...s/utilities/surface/surfaceMeshImport/surfaceMeshImport.C