[9.0] TBS: fix log formatting (backport #15496)

[mergify]

Motivation/summary

Fix a missing colon in logs (typo from #15235 ), and remove "storage" in "configured storage limit reached" message to make way for #15467 to avoid confusion

Checklist

• Update CHANGELOG.asciidoc
• Documentation has been updated

For functional changes, consider:

• Is it observable through the addition of either logging or metrics?
• Is its use being published in telemetry to enable product improvement?
• Have system tests been added to avoid regression?

How to test these changes

Related issues

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This is an automatic backport of pull request #15496 done by [Mergify](https://mergify.com).

[mergify]

This pull request has been removed from the queue for the following reason: checks failed.

The merge conditions cannot be satisfied due to failing checks:

• ❌ test (windows-latest)

You should look at the reason for the failure and decide if the pull request needs to be fixed or if you want to requeue it.

If you want to requeue this pull request, you need to post a comment with the text: @mergifyio requeue