[docs] Fix a typo: iteratation -> iteration

Reviewers: dgross

Reviewed By: dgross

Subscribers: dgross, llvm-commits

Differential Revision: https://reviews.llvm.org/D35822

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@308994 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed