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

llvm-svn: 20048
diff --git a/llvm/lib/Target/Alpha/Alpha.td b/llvm/lib/Target/Alpha/Alpha.td
index e48bea1..13445f3 100644
--- a/llvm/lib/Target/Alpha/Alpha.td
+++ b/llvm/lib/Target/Alpha/Alpha.td
@@ -1,4 +1,4 @@
-//===- Alpha.td - Describe the Alpha Target Machine ----*- tablegen -*-===//
+//===- Alpha.td - Describe the Alpha Target Machine --------*- tablegen -*-===//
 // 
 //                     The LLVM Compiler Infrastructure
 //