Update middleware.rst

Asp.Net 5 name correction to Asp.Net Core

aspnet/fundamentals/middleware.rst

@@ -17,7 +17,7 @@ Middleware are software components that are assembled into an application pipeli
 
 Request delegates are configured using `Run <https://docs.asp.net/projects/api/en/latest/autoapi/Microsoft/AspNet/Builder/RunExtensions/index.html>`__, `Map <https://docs.asp.net/projects/api/en/latest/autoapi/Microsoft/AspNet/Builder/MapExtensions/index.html?highlight=microsoft.aspnet.builder.mapextensions#Microsoft.AspNet.Builder.MapExtensions.Map>`__, and `Use <https://docs.asp.net/projects/api/en/latest/autoapi/Microsoft/AspNet/Builder/UseExtensions/index.html?highlight=microsoft.aspnet.builder.useextensions#Microsoft.AspNet.Builder.UseExtensions.Use>`__ extension methods on the `IApplicationBuilder <https://docs.asp.net/projects/api/en/latest/autoapi/Microsoft/AspNet/Builder/IApplicationBuilder/index.html>`_ type that is passed into the ``Configure`` method in the ``Startup`` class. An individual request delegate can be specified in-line as an anonymous method, or it can be defined in a reusable class. These reusable classes  are `middleware`, or `middleware components`. Each middleware component in the request pipeline is responsible for invoking the next component in the pipeline, or short-circuiting the chain if appropriate.
 
-:doc:`/migration/http-modules` explains the difference between request pipelines in ASP.NET 5 and the previous versions and provides more middleware samples.
+:doc:`/migration/http-modules` explains the difference between request pipelines in ASP.NET Core and the previous versions and provides more middleware samples.
 
 Creating a middleware pipeline with IApplicationBuilder
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