System.Random thread safety topic is missing note about System.Random.Shared added in .NET6

https://learn.microsoft.com/en-us/dotnet/api/system.random?view=net-7.0#the-systemrandom-class-and-thread-safety says `System.Random` class is not thread safety and demonstrates how to make it thread safe using a lock object. But .NET 6 has added a thread safety [Random.Shared](https://learn.microsoft.com/en-us/dotnet/api/system.random.shared?view=net-6.0) which can be used. The topic doesn't mention it.