really minor doc typo

[gaissmai]

Hi, since I'll use your rex lib I try to understand the inner working and therefore I read the code, and of course, how could it be otherwise, i find typos. If you do not mind, I'll report them to you. Please tell me if it bothers you.

Thanks for rex!

[gaissmai]

omg, typo in my typo correction, I meant 'through'

[coveralls]

Pull Request Test Coverage Report for Build 3187763648

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

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Totals
Change from base Build 3186867360:	0.0%
Covered Lines:	735
Relevant Lines:	735

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💛 - Coveralls

[hedhyw]

@gaissmai Sure. I will not merge it for a while, in case you want to change something more. Thanks for contribution

[gaissmai]

will stop here and make a new PR maybe with some more typos, including mine, omg