[analyzer] Correct the comment

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179914 91177308-0d34-0410-b5e6-96231b3b80d8
[analyzer] Flip printPretty and printPrettyAsExpr as per suggestion from Jordan (r179572)

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@179915 91177308-0d34-0410-b5e6-96231b3b80d8