Fix: perspective parameters in Dreamwaker's Butterfly

- Doc README.md update event announcements

campaign/event_20200917_cn/ht6.py

@@ -66,6 +66,9 @@ class Config(ConfigBase):
     MAP_HAS_AMBUSH = False
     # ===== End of generated config =====
 
+    MAP_SWIPE_MULTIPLY_MINITOUCH = 1.446
+    MAP_SWIPE_MULTIPLY = 1.495
+
 
 class Campaign(CampaignBase):
     MAP = MAP