docs: added pvc resize info

[deerskindoll]

What does this pull request change?

added pvc resize info

What issues does this pull request fix or reference?

https://issues.redhat.com/browse/CRW-6544

Specify the version of the product this pull request applies to

main

Pull Request checklist

The author and the reviewers validate the content of this pull request with the following checklist, in addition to the automated tests.

• Any procedure:
  • [ ] Successfully tested.
• Any page or link rename:
  • [ ] The page contains a redirection for the previous URL.
  • Propagate the URL change in:
    • [ ] Dashboard default branding data
• [ ] Builds on Eclipse Che hosted by Red Hat.
• [x] the Validate language on files added or modified step reports no vale warnings.

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[deerskindoll]

@AObuchow is this wording ok?

[ibuziuk]

@deerskindoll @rafaeltuelho PR got stale for quite a while :/ can we merge now?

[deerskindoll]

@deerskindoll @rafaeltuelho PR got stale for quite a while :/ can we merge now?

if @rafaeltuelho is happy with the content, I'll be happy happy to publish it asap. there's also a code owner review needed, though.

[rafaeltuelho]

It seems reasonable to me!