Fix #331: command extract-cardinalities uses reserved option 'v' (#332)
Fix #331: command extract-cardinalities uses reserved option 'v' (#332)

Symfony commands have a reserved option 'v' for verbosity, so command
can't have that option themselves. And since the shortcut for
cardinality-file has stayed the same, revert the shortcut for
vocabulary-file back to 's'.
api-platform/schema-generator,api-platform/schema-generator