fix: typo

Author: Alexander-Klee

src/main/resources/messages.properties

@@ -122,7 +122,7 @@ Recommended solution:
 bookings.conflict.resolution=Conflict Resolution
 bookings.description.none=No Description
 bookings.conflict.delete=Delete
-bookings.conflict.cooperate=Use room in collaboration with following bbooking
+bookings.conflict.cooperate=Use room in collaboration with following booking
 bookings.conflict.contact=Contact owner of following booking
 bookings.conflict.solve=Solve
 bookings.view=View Booking