fix clang-format issue 2

Author: myler

SYCL/SubGroup/generic-shuffle_aspect-fp64.cpp

@@ -5,7 +5,7 @@
 // RUN: %ACC_RUN_PLACEHOLDER %t.out
 //
 //==-- generic_shuffle_aspect-fp64.cpp - SYCL sub_group generic shuffle test *-
-//C++ -*--==//
+// C++ -*--==//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.