doc prep for Zowe v1.28.6

[anaxceron]

Describe your pull request here: Prepping for Zowe v1.28.6 doc

List the file(s) included in this PR: tpsr-v1.28.6.md +

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[github-actions]

😺 Thank you for creating this PR! To publish your content to Zowe Docs, follow these steps.

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[github-actions]

📁 The PR description is missing the file name(s) for the updated content. List all the files included in this PR so this information displays in our Zowe Docs GitHub Slack channel.

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[github-actions]

📁 The PR description is missing the file name(s) for the updated content. List all the files included in this PR so this information displays in our Zowe Docs GitHub Slack channel.

If you have addressed this issue already, refresh this page in your browser to remove this comment.

[github-actions]

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