Fix a typo in a comment in tools/clang/unittests/Frontend/Makefile.

llvm-svn: 125182
diff --git a/clang/unittests/Frontend/Makefile b/clang/unittests/Frontend/Makefile
index 1ac0dd64..cdbfb4c 100644
--- a/clang/unittests/Frontend/Makefile
+++ b/clang/unittests/Frontend/Makefile
@@ -1,4 +1,4 @@
-##===- unittests/ADT/Makefile ------------------------------*- Makefile -*-===##
+##===- unittests/Frontend/Makefile -------------------------*- Makefile -*-===##
 #
 #                     The LLVM Compiler Infrastructure
 #