Add a information on the jump that is a special jump

Add the "update" feature on the jump.

Back/skydiveLogs-api.Infrastructure/JumpRepository.cs

@@ -60,7 +60,7 @@ namespace skydiveLogs_api.Infrastructure
 
         public bool Update(Jump updatedJump)
         {
-            throw new System.NotImplementedException();
+            return _col.Update(updatedJump);
         }
 
         public bool DeleteById(int id)