MAGE 1.3: convert "-" to ":"

package.json

{
  "scripts": {
    "show:config": "echo       'Show the compiled MAGE configuration'   && mage show:config",
    "archivist:create": "echo  'Create archivist vaults'                && mage archivist:create",
    "archivist:migrate": "echo 'Migrate archivist vaults'               && mage archivist:migrate",
    "archivist:drop": "echo    'Drop the archivist vaults'              && mage archivist:drop"
  }
}