Update Redmi Note 6 Pro maintainer

Change-Id: I0a5d9dd12f418a994e41259421016f04c739285d
diff --git a/_xiaomi/xiaomiredminote6.markdown b/_xiaomi/xiaomiredminote6.markdown
index 59bba29..8260d57 100644
--- a/_xiaomi/xiaomiredminote6.markdown
+++ b/_xiaomi/xiaomiredminote6.markdown
@@ -4,7 +4,7 @@
 codename: tulip
 downloadfolder: tulip
 supportstatus: Current
-maintainer: Mauronofrio
+maintainer: DD3Boh, mauronofrio
 devicetree: https://github.com/TeamWin/android_device_xiaomi_tulip
 oem: Xiaomi
 ---