docs: update grace period days config description

[JameelB]

Description

grace_period_days can apply to any instance types/billing model, not just those that can be promoted. e.g. if a subscription expires in ams, we want to allow users to renew their subscription before deleting their Kafka instances.

Verification Steps

1. Doc changes reviewed

Checklist (Definition of Done)

• All acceptance criteria specified in JIRA have been completed
• Unit and integration tests added that prove the fix is effective or the feature works (tested against emulated and non-emulated OCM environment)
• Documentation added for the feature
• CI and all relevant tests are passing
• Code Review completed
• Verified independently by reviewer
• All PR comments are resolved either by addressing them or creating follow up tasks
• Required metrics/dashboards/alerts have been added (or PR created).
• Required Standard Operating Procedure (SOP) is added.
• JIRA has been created for changes required on the client side

[codecov]

Codecov Report

Merging #1549 (70738b0) into main (8c00047) will not change coverage.
The diff coverage is n/a.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1549   +/-   ##
=======================================
  Coverage   82.78%   82.78%           
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  Files         154      154           
  Lines       14196    14196           
=======================================
  Hits        11752    11752           
  Misses       2025     2025           
  Partials      419      419           

Flag	Coverage Δ
unittests	82.78% <ø> (ø)

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[miguelsorianod]

This was pending reply from BU through other channels

[miguelsorianod]

From this, we were pending some answers from BU. What's the current state of this? @JameelB @ziccardi

[ziccardi]

From this, we were pending some answers from BU. What's the current state of this? @JameelB @ziccardi

Still didn't receive an answer to the JIRA. I will push it now.