Fixes a typo and changes references to the function clang_displayDiagnostic (which was removed in r96823) to clang_formatDiagnostics.

Patch by David Wiberg



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@194956 91177308-0d34-0410-b5e6-96231b3b80d8