[Writing styles] Adjust acronym check to accept compound nouns spelled out with lowercased initials

[timonrey]

closes https://github.com/commercetools/commercetools-docs/issues/4825

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Latest commit: a03f4478444a25b0f43b70a16de2ec3d048bb726

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

| Name | Type | | --------------------------------- | ----- | | @commercetools-docs/writing-style | Patch |

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