Fix Swagger UI configuration to use NSwag instead of Swashbuckle (#36929)

* Fix Swagger UI configuration to use NSwag instead of Swashbuckle

The tutorial code used Swashbuckle's UseSwaggerUI() method, but the project already has NSwag.AspNetCore installed. This caused a compilation error since the method wasn't available.

* Remove Swashbuckle.AspNetCore package reference

Removed Swashbuckle.AspNetCore package reference since it is not used for the 9.x version of this sample.

---------

Co-authored-by: Wade Pickett <wpickett@microsoft.com>

Author: Astroa7m

aspnetcore/tutorials/first-mongo-app/samples/9.x/BookStoreApi/BookStoreApi.csproj

@@ -10,7 +10,6 @@
     <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="9.0.4" />
     <PackageReference Include="MongoDB.Driver" Version="3.3.0" />
     <PackageReference Include="NSwag.AspNetCore" Version="14.3.0" />
-    <PackageReference Include="Swashbuckle.AspNetCore" Version="8.1.0" />
   </ItemGroup>
 
 </Project>

aspnetcore/tutorials/first-mongo-app/samples/9.x/BookStoreApi/Program.cs

@@ -31,9 +31,9 @@
 if (app.Environment.IsDevelopment())
 {
     app.MapOpenApi();
-    app.UseSwaggerUI(options =>
+    app.UseSwaggerUi(options =>
     {
-        options.SwaggerEndpoint("/openapi/v1.json", "v1");
+        options.DocumentPath = "/openapi/v1.json";
     });
 }
 // </snippet_UseSwagger>