docs: Update README.md description [skip ci]

Author: willysoft

README.md

@@ -102,9 +102,8 @@ app.MapHealthChecks("/healthz").RequireLocalPortFiltering(allowPort: 5105);
 You can use additional middleware conditionally based on the local port:
 
 ```csharp
-app.UseWhen(context => context.Connection.LocalPort == 5099,
+app.UseWhen(context => context.Connection.LocalPort != 5105,
             appBuilder => appBuilder.UseHttpsRedirection());
-
 ```
 
 ## Contribution

sample/LocalPortFilteringDemo/Program.cs

@@ -11,7 +11,7 @@
 
 app.UseSwagger();
 app.UseSwaggerUI();
-app.UseWhen(context => context.Connection.LocalPort == 5099,
+app.UseWhen(context => context.Connection.LocalPort != 5105,
             appBuilder => appBuilder.UseHttpsRedirection());
 app.UseAuthorization();
 app.UseLocalPortFiltering();