Fix method/variable name typos

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@196214 91177308-0d34-0410-b5e6-96231b3b80d8
Documentation typo corrections

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@196215 91177308-0d34-0410-b5e6-96231b3b80d8