This is something I noticed as well, someone corrected a 1-char typo in one of his projects' documentation and he quickly merged and replied with "Thanks :)"
Exactly the same thing happened to me. Getting a sparkly cake from him feels like getting a geek merit badge.
On a side note, Kenneth is a standup guy who helped propel me into the world of open source. I made a few slight documentation updates on Requests as part of my first pull request ever, and he made me feel like my contribution was so important.