Suboptimal help string for parameter "--mets"

[wrznr]

Running an arbitrary ocrd processor with --help returns

$ ocrd-tesserocr-binarize --help
Usage: ocrd-tesserocr-binarize [OPTIONS]

Options:
  -V, --version                   Show version
  -l, --log-level [OFF|ERROR|WARN|INFO|DEBUG|TRACE]
                                  Log level
  -J, --dump-json                 Dump tool description as JSON and exit
  -p, --parameter PATH
  -g, --page-id TEXT              ID(s) of the pages to process
  -O, --output-file-grp TEXT      File group(s) used as output.
  -I, --input-file-grp TEXT       File group(s) used as input.
  -w, --working-dir TEXT          Working Directory
  -m, --mets TEXT                 METS URL to validate
  --help                          Show this message and exit.

The help string for --mets is not optimal. In addition,

core/ocrd/ocrd/cli/process.py

Line 17 in 1782c56

@click.option('-m', '--mets', help="METS to process", required=True)

seems to set a much more reasonable help string.