Merge pull request #5661 from ferferga/openapi-product-version

Return Major.Minor.Build instead of Major.Minor.Build.Revision for OpenAPI

(cherry picked from commit cb111eb767e2d67c79a74833710f40b85851f457)
Signed-off-by: Joshua M. Boniface <joshua@boniface.me>

Jellyfin.Server/Extensions/ApiServiceCollectionExtensions.cs

@@ -261,7 +261,7 @@ namespace Jellyfin.Server.Extensions
         {
             return serviceCollection.AddSwaggerGen(c =>
             {
-                var version = typeof(ApplicationHost).Assembly.GetName().Version?.ToString() ?? "0.0.0.1";
+                var version = typeof(ApplicationHost).Assembly.GetName().Version?.ToString(3) ?? "0.0.1";
                 c.SwaggerDoc("api-docs", new OpenApiInfo
                 {
                     Title = "Jellyfin API",