wagtail_update_image_renditions documents invalid argument (possible typo)

[Jake Holman]

Documentation for wagtail_update_image_renditions states that –purge-only can be used as an argument. However, this should likely be --purge-only (noting the extra -).

Attempting to execute ./manage.py wagtail_update_image_renditions -purge-only will result in error: unrecognized arguments: -purge-only

Pertinent section of the Wagtail docs

https://docs.wagtail.org/en/stable/reference/management_commands.html#wagtail-update-image-renditions

Details

Simply changing from -purge-only to --purge-only would resolve the problem.

Or, potentially adding a sub-section within "wagtail_update_image_renditions" to document the argument, as per other commands within that same page.

[Pranith_1604]

Can I start doing this

[LB (Ben Johnston)]

Yes please. Go for it - thanks @Beeram12

Be sure to run the correct command yourself and include a screenshot or similar of the console output with your PR. This way we know it's working as expected with whatever the updated docs will be.

[Pranith_1604]

Sure