[mgkimsal]

If they're presented as "I'm a code contributor" but it's solely non-code changes, then yes, it seems disingenuous at best.

But if they're accepted by the repo owner, they're probably not nonsense. And projects need better documentation. If the OP was applying for a junior 'tech' role of some sort, and demonstrated that experience of revising documentation to be up to date and improved... it's a step up from some people I've seen over the years (who leave behind bad/broken docs, for example).