Make the rest of file header comments consistent in format and style

llvm-svn: 20048
diff --git a/llvm/lib/Target/Alpha/Alpha.h b/llvm/lib/Target/Alpha/Alpha.h
index 04daaff..6e22c18 100644
--- a/llvm/lib/Target/Alpha/Alpha.h
+++ b/llvm/lib/Target/Alpha/Alpha.h
@@ -1,4 +1,4 @@
-//===-- Alpha.h - Top-level interface for Alpha representation -*- C++ -*-//
+//===-- Alpha.h - Top-level interface for Alpha representation --*- C++ -*-===//
 // 
 //                     The LLVM Compiler Infrastructure
 //