Bump System.ServiceProcess.ServiceController from 8.0.1 to 9.0.1 in /docs/framework/windows-services/snippets/MyNewService/csharp in the dotnet group across 1 directory

Bump System.ServiceProcess.ServiceController from 8.0.1 to 9.0.1 in /docs/framework/windows-services/snippets/MyNewService/csharp in the dotnet group across 1 directory #836