[libcxx] [test] Fix comment typos, strip trailing whitespace.
No functional change, no code review.
llvm-svn: 292434
diff --git a/libcxx/test/support/constexpr_char_traits.hpp b/libcxx/test/support/constexpr_char_traits.hpp
index 0a73d3a..2136b26 100644
--- a/libcxx/test/support/constexpr_char_traits.hpp
+++ b/libcxx/test/support/constexpr_char_traits.hpp
@@ -1,5 +1,5 @@
// -*- C++ -*-
-//===-------_------------ constexpr_char_traits ---------------------------===//
+//===-------------------- constexpr_char_traits ---------------------------===//
//
// The LLVM Compiler Infrastructure
//