Update about-client-installation-properties.md

[dereklangMSFT]

/UPGRADETOLATEST is actually a parameter and belongs in the parameter section of the doc.

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@dereklangMSFT : Thanks for your contribution! The author(s) have been notified to review your proposed change.

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[MandiOhlinger]

Closing PR w/o merging. @dereklangMSFT will create new PR due to merge conflicts.