Exactly. But if you go around and look at any tech company, the majority of people are white males. I think changing that actual situation is more important than changing documentation and making yourself feel good about having done something.

If you really want to change things, you can write to your Senator or suchlike about racial inequality you have observed, or immigration reform. That is much harder than just grepping a codebase and submitting a PR -- but if you do it, you might actually effect change (and as a person of colour, I would be much more grateful to you, if you are from a more privileged class).