fix tests

ChatBot.Tests/Common/Constants/AIResponseConstantsTests.cs

@@ -392,7 +392,7 @@ public class AIResponseConstantsTests
             _ => typeof(object),
         };
 
-        emptyMarkerType.Should().Be(typeof(string));
+        emptyMarkerType.Should().Be<string>();
     }
 
     [Fact]

ChatBot.Tests/Common/Constants/ChatTypesTests.cs

@@ -345,28 +345,28 @@ public class ChatTypesTests
             "private" => typeof(string),
             _ => typeof(object),
         };
-        privateType.Should().Be(typeof(string));
+        privateType.Should().Be<string>();
 
         var groupType = ChatTypes.Group switch
         {
             "group" => typeof(string),
             _ => typeof(object),
         };
-        groupType.Should().Be(typeof(string));
+        groupType.Should().Be<string>();
 
         var superGroupType = ChatTypes.SuperGroup switch
         {
             "supergroup" => typeof(string),
             _ => typeof(object),
         };
-        superGroupType.Should().Be(typeof(string));
+        superGroupType.Should().Be<string>();
 
         var channelType = ChatTypes.Channel switch
         {
             "channel" => typeof(string),
             _ => typeof(object),
         };
-        channelType.Should().Be(typeof(string));
+        channelType.Should().Be<string>();
     }
 
     [Fact]