Set custom data retention periods for buckets - update docs

[ALuckette]

Update

• As a PAYG or Annual Contract user, when creating a TSM bucket, you can now set a custom data retention period. Users are no longer limited to the retention period options displayed in the dropdown. Note: Free users can only retain data up to 30 days.

Request

• Update docs

Relevant URLs

• https://docs.influxdata.com/influxdb/cloud/organizations/buckets/create-bucket/