Xiaomi: Add XDA Link for Santoni Rosy Vince

Change-Id: I0a93c47f1b5f3d2a07e621bba45c0a1f43f15e7c
Signed-off-by: IsaacChen <tingyi364@gmail.com>
diff --git a/_xiaomi/xiaomiredmi4x.markdown b/_xiaomi/xiaomiredmi4x.markdown
index 4e84b3a..40802df 100644
--- a/_xiaomi/xiaomiredmi4x.markdown
+++ b/_xiaomi/xiaomiredmi4x.markdown
@@ -8,6 +8,7 @@
 devicetree: https://github.com/TeamWin/android_device_xiaomi_santoni.git
 oem: Xiaomi
 ddof: "/dev/block/bootdevice/by-name/recovery"
+xdathread: "https://forum.xda-developers.com/xiaomi-redmi-4x/development/recovery-twrp-3-1-1-xiaomi-redmi-4x-t3633049"
 ---
 
 {% include disclaimer.html %}