Pretentiousness/archaism aside, does the sentence
Any changes that were made have been detailed hence.
make sense? The context would be that the descriptions of changes would be found in the paragraphs following this sentence.
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A look at the three meanings of hence, reveal possible meanings of:
Therefore I conclude that the word is misused here. You could say "the changes that were made will be detailed a week hence". The writing of "have been detailed" means the detailing occurred in the past, even if it is later in the document (which I assume is what the writer is trying to imply), so that's two reasons 'hence' shouldn't be used.
There are plenty of ways to correctly end a sentence with 'hence'., including the example I gave above and Joe Dark's example.