Fix device tree URL for Asus Nexus 7 2012

Change-Id: I8c6c3dcd558d57ea55de2ecb95a8270353ce2792
diff --git a/_devices/asusnexus72012wifi.markdown b/_devices/asusnexus72012wifi.markdown
index ac27916..6b6358d 100644
--- a/_devices/asusnexus72012wifi.markdown
+++ b/_devices/asusnexus72012wifi.markdown
@@ -7,7 +7,7 @@
 supportstatus: Current

 maintainer: Dees_Troy

 oem: Asus

-devicetree: https://github.com/omnirom/android_device_lge_grouper

+devicetree: https://github.com/omnirom/android_device_asus_grouper

 xdathread: "http://forum.xda-developers.com/showthread.php?t=1779092"

 ---