Fix calculation for total pages

Author: acoumb

src/Umbraco.Cms.Integrations.Crm.ActiveCampaign/Models/Dtos/MetaDto.cs

@@ -8,6 +8,8 @@ public class MetaDto
         public string Total { get; set; }
 
         [JsonPropertyName("totalPages")]
-        public int TotalPages => int.TryParse(Total, out var total) ? total / Constants.DefaultPageSize : 0;
+        public int TotalPages => int.TryParse(Total, out var total) 
+            ? (int)Math.Ceiling((double)total / Constants.DefaultPageSize) 
+            : 0;
     }
 }