Help text for `count` options has `[x>=0]` appended

[dnicolodi]

Consider this example, taken more or less verbatim from the documentation:

import click

@click.command()
@click.option('-v', '--verbose', count=True, help='Increase verbosity.')
def log(verbose):
    click.echo(f"Verbosity: {verbose}")

if __name__ == '__main__':
    log()

The help text for this command is:

Usage: count.py [OPTIONS]

Options:
  -v, --verbose  Increase verbosity.  [x>=0]
  --help         Show this message and exit.

I don't know what the [x>=0] part is trying to convey, and I think it should not be there. I don't know when Click started adding it, but it was definitely not there with older versions.

Environment:

• Python version: 3.9.7
• Click version: 8.0.1

[dnicolodi]

Adding type=int to the option declaration removed the [x>=0] part from the help text, although I think this is more a work around than a solution. If this is how count options should be declared, the documentation should be updated.