[enterprise-4.16] OBSDOCS-1371: Add a release note about change of parameter name from 'delivery' to 'deliveryMode'

[max-cx]

Cherry-pick of #86601

Version(s): 4.16

Issue: https://issues.redhat.com/browse/OBSDOCS-1371

QE review: N/A

[openshift-ci-robot]

@max-cx: This pull request references OBSDOCS-1371 which is a valid jira issue.

In response to this:

Cherry-pick of #86601

Version(s): 4.16

Issue: https://issues.redhat.com/browse/OBSDOCS-1371

QE review: N/A

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[ocpdocs-previewbot]

🤖 Thu Mar 13 22:30:41 - Prow CI generated the docs preview:

https://90255--ocpdocs-pr.netlify.app/openshift-enterprise/latest/observability/logging/logging-6.0/log6x-release-notes.html

[openshift-ci]

@max-cx: all tests passed!

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