Update mul128.md

Colin Robertson · web-flow · commit 3eb526a7876d · 2019-03-27T13:26:08.000-07:00
Update date, some formatting.
diff --git a/docs/intrinsics/mul128.md b/docs/intrinsics/mul128.md
@@ -1,6 +1,6 @@
 ---
 title: "_mul128"
-ms.date: "11/04/2016"
+ms.date: "03/27/2019"
 f1_keywords: ["_mul128"]
 helpviewer_keywords: ["mul128 intrinsic", "_mul128 intrinsic"]
 ms.assetid: f68914b9-bffb-4e46-b1ba-4c249f7b4ecc
@@ -21,7 +21,7 @@ __int64 _mul128(
 );
 ```
 
-#### Parameters
+### Parameters
 
 *Multiplier*<br/>
 [in] The first 64-bit integer to multiply.
@@ -46,7 +46,7 @@ The low 64 bits of the product.
 
 ## Example
 
-```
+```C
 // mul128.c
 // processor: x64
 #include <stdio.h>
