Fix some compilation warnings (#1010)

* Fixe some summary warning

* Fixed more warning

* Uniformed example projects code

* Uniformed test projects code

* Fix OperatingSystems enum and GenericType summaries

examples/namespace/NamespaceExample.cs

@@ -1,8 +1,8 @@
+using k8s;
+using k8s.Models;
 using System;
 using System.Net;
 using System.Threading.Tasks;
-using k8s;
-using k8s.Models;
 
 namespace @namespace
 {