(docs): fix v1.30.0 migration guide

[everettraven]

Description of the change:

• Fixes the v1.30.0 release migration guide. Looks like the migration template accidentally got committed and resulted in an improper migration guide being produced.

Motivation for the change:

• fixes missing upgrade docs for v1.30.0 #6480

Checklist

If the pull request includes user-facing changes, extra documentation is required:

• Add a new changelog fragment in changelog/fragments (see changelog/fragments/00-template.yaml)
• Add or update relevant sections of the docs website in website/content/en/docs

[grokspawn]

sanity failing because there is no docs dir in v0.19.x branch? (https://github.com/operator-framework/operator-sdk/tree/v0.19.x/doc)

[everettraven]

sanity failing because there is no docs dir in v0.19.x branch? (https://github.com/operator-framework/operator-sdk/tree/v0.19.x/doc)

Ah, this looks to be because we had to drop anything > n-12 branches from the Netlify builds since we ran out of branch builds...

I'll create a separate PR to fix this because it is likely that this impacts more than just this PR.

[openshift-bot]

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/lifecycle rotten
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[openshift-ci]

@openshift-bot: Closed this PR.

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