Correct small comment order typo.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@127575 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/TGLexer.h b/utils/TableGen/TGLexer.h
index 55a6c5d..8859479 100644
--- a/utils/TableGen/TGLexer.h
+++ b/utils/TableGen/TGLexer.h
@@ -36,7 +36,7 @@
     l_brace, r_brace,   // { }
     l_paren, r_paren,   // ( )
     less, greater,      // < >
-    colon, semi,        // ; :
+    colon, semi,        // : ;
     comma, period,      // , .
     equal, question,    // = ?