Update docs/understanding-bigbang/licensing-model.md

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Formatting and editing updates made to Big Bang Licensing Model Overview page.

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added kinddocs statusreview labels

requested review from @ryan.thompson.44

assigned to @cbowmanclare

requested review from @michaelmartin, @andrewshoell, and @chris.oconnell

changed milestone to %2.30.0

approved this merge request

merged

mentioned in commit 74971149