Finished sentence and fixed spelling mistake. (#1536)

src/Services/Catalog/Catalog.API/IntegrationEvents/Events/ProductPriceChangedIntegrationEvent.cs

@@ -3,8 +3,8 @@
     using BuildingBlocks.EventBus.Events;
 
     // Integration Events notes: 
-    // An Event is “something that has happened in the past”, therefore its name has to be   
-    // An Integration Event is an event that can cause side effects to other microsrvices, Bounded-Contexts or external systems.
+    // An Event is “something that has happened in the past”, therefore its name has to be past tense
+    // An Integration Event is an event that can cause side effects to other microservices, Bounded-Contexts or external systems.
     public class ProductPriceChangedIntegrationEvent : IntegrationEvent
     {        
         public int ProductId { get; private set; }
@@ -20,4 +20,4 @@
             OldPrice = oldPrice;
         }
     }
-}
+}