Docs feedback on custom-resource-preflight

[dexhorthy]

URL: https://docs.replicated.com/reference/custom-resource-preflight
Feedback details: intro to preflight/support bundles should include the most likely first step as an example "add my app's logs by label" - seems MUCH more relevant than something like collectd which is in there now

[paigecalvert]

thanks @dexhorthy ! seems like a reasonable update to me. I'll make the swap for that example