[ORC] Fix file comment formatting. NFC.

(cherry picked from commit 7fb233f)

Author: lhames

llvm/lib/ExecutionEngine/Orc/ELFNixPlatform.cpp

@@ -1,5 +1,4 @@
-//===------ ELFNixPlatform.cpp - Utilities for executing ELFNix in Orc
-//-----===//
+//===----- ELFNixPlatform.cpp - Utilities for executing ELFNix in Orc -----===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.