Fix minor errors

Author: A-Programmer

Samples/MediatorSampleApp/Program.cs

@@ -1,8 +1,7 @@
 using System.Reflection;
 using FluentValidation;
 using KSFramework.Messaging.Abstraction;
-using KSFramework.Messaging.Behaviors;
-using KSFramework.Messaging.Configuration;
+using KSFramework.Messaging.Extensions;
 using KSFramework.Messaging.Samples;
 using Microsoft.Extensions.DependencyInjection;
 

tests/KSFramework/KSFramework.UnitTests/Configuration/AddKSMediatorNotificationTests.cs

@@ -1,5 +1,5 @@
 using KSFramework.Messaging.Abstraction;
-using KSFramework.Messaging.Configuration;
+using KSFramework.Messaging.Extensions;
 using Microsoft.Extensions.DependencyInjection;
 
 namespace KSFramework.UnitTests.Configuration;

tests/KSFramework/KSFramework.UnitTests/Configuration/AddKSMediatorTests.cs

@@ -1,5 +1,5 @@
 using KSFramework.Messaging.Abstraction;
-using KSFramework.Messaging.Configuration;
+using KSFramework.Messaging.Extensions;
 using KSFramework.Messaging.Samples;
 using Microsoft.Extensions.DependencyInjection;
 

tests/KSFramework/KSFramework.UnitTests/Mediator/Registration/AddKSMediatorRegistrationTests.cs

@@ -1,5 +1,5 @@
 using KSFramework.Messaging.Abstraction;
-using KSFramework.Messaging.Configuration;
+using KSFramework.Messaging.Extensions;
 using Microsoft.Extensions.DependencyInjection;
 
 namespace KSFramework.UnitTests.Mediator.Registration;