Fix typo on CoroutineRef* doc (#15179)

Just a small fix for a typo ("for for").
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Cléber Zavadniak 2020-08-11 23:46:16 -03:00 • committed by GitHub
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@ -158,7 +158,7 @@ type
## CoroutineRef holds a pointer to actual coroutine object. Public API always returns
## CoroutineRef instead of CoroutinePtr in order to allow holding a reference to coroutine
## object while it can be safely deallocated by coroutine scheduler loop. In this case
## Coroutine.reference.coro is set to nil. Public API checks for for it being nil and
## Coroutine.reference.coro is set to nil. Public API checks for it being nil and
## gracefully fails if it is nil.
coro: CoroutinePtr