[PATCH] Intel-IOMMU.txt: fix link

[Michael S. Tsirkin]

Looks like the VT-D spec at intel.com got moved.
Update the link.

Signed-off-by: Michael S. Tsirkin <mst@xxxxxxxxxx>
---
 Documentation/Intel-IOMMU.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Documentation/Intel-IOMMU.txt b/Documentation/Intel-IOMMU.txt
index 7b57fc0..49585b6 100644
--- a/Documentation/Intel-IOMMU.txt
+++ b/Documentation/Intel-IOMMU.txt
@@ -3,7 +3,7 @@ Linux IOMMU Support
 
 The architecture spec can be obtained from the below location.
 
-http://www.intel.com/technology/virtualization/
+http://www.intel.com/content/dam/www/public/us/en/documents/product-specifications/vt-directed-io-spec.pdf
 
 This guide gives a quick cheat sheet for some basic understanding.
 
-- 
MST