HI Shiyi,
The rules for resetting votes are documented here:
And they are largely intentional.
Unfortunately, they don't really have a concept of a "trivial" change to a source file itself. A change to a single line of code might itself be non-trivial (making something wrong or even malicious), so this might be hard to do. A change to a comment might be a bit safer. It's possible you could file a bug asking for improvements to how things work.
Ultimately, I would guess there are two options. One is to become a committer, because I think in that case you wouldn't need a review. The second might be for the reviewer to suggest a change via Gerrit; I think it's possible in that case that that might shorten the roundtrip time, but I've rarely used this feature so I'm not sure.
Best,
-- Dirk