fix: event creation on external office calendar (#3152)

* fix: event creation on external office calendar

* chore: simplify fix implementation

Co-authored-by: Bailey Pumfleet <pumfleet@hey.com>

packages/app-store/office365calendar/lib/CalendarService.ts

@@ -42,7 +42,7 @@ export default class Office365CalendarService implements Calendar {
         ? `${event.destinationCalendar.externalId}/`
         : "";
 
-      const response = await fetch(`https://graph.microsoft.com/v1.0/me/calendar/events`, {
+      const response = await fetch(`https://graph.microsoft.com/v1.0/me/calendars/${calendarId}events`, {
         method: "POST",
         headers: {
           Authorization: "Bearer " + accessToken,