newline fix for window

main.py

@@ -121,7 +121,7 @@ def create_event(name: str,
 
 def write_calendar(events: list[Event], filename) -> None:
     """write calendar to csv file"""
-    with open(filename, "w", encoding="utf-8") as handle:
+    with open(filename, "w", encoding="utf-8", newline="") as handle:
         writer =DataclassWriter(handle, events, Event)
         writer.map("event_name").to("EVENT NAME")
         writer.map("venue_name").to("VENUE NAME")