It's not a very hard problem to solve though. Just fix the typos, and don't introduce (many) new ones.

The people contributing those fixes are doing so because they want to contribute, and typo fixes are very easy to be certain about that it's an improvement (without a chance of introducing regressions, etc.).

Of course, as the easy-to-fix problems are eliminated, focus will shift to finding more meaningful ways to make improvements, or just using the language which has fewer problems as a result.