Update config.py

Author: SHABIN-K

config.py

@@ -17,6 +17,8 @@
 #OWNER ID
 OWNER_ID = int(os.environ.get("OWNER_ID", ""))
 
+DB_URI = os.environ.get("DATABASE_URL", "")
+
 #force sub channel id, if you want enable force sub
 FORCE_SUB_CHANNEL = int(os.environ.get("FORCE_SUB_CHANNEL", "0"))