twrpme: add gitactivity changelog tag to device markdowns

Change-Id: I437a42c1b2ccd79b3f85ad0962c362680c28d171
diff --git a/_devices/xiaomiredminote3.markdown b/_devices/xiaomiredminote3.markdown
index 386f3c3..46f74bf 100644
--- a/_devices/xiaomiredminote3.markdown
+++ b/_devices/xiaomiredminote3.markdown
@@ -5,6 +5,7 @@
 downloadfolder: kenzo
 supportstatus: Current
 maintainer: Vibhor Chaudhary (vibhu0009)
+devicetree: https://github.com/TeamWin/android_device_xiaomi_kenzo.git
 oem: Xiaomi
 ddof: "/dev/block/platform/msm_sdcc.1/by-name/recovery"
 ---