Update README.md

Author: prozolic

README.md

@@ -5,7 +5,7 @@ Utf8StringSplitter
 [![Utf8StringSplitter](https://img.shields.io/nuget/v/Utf8StringSplitter?label=nuget%20Utf8StringSplitter)](https://www.nuget.org/packages/Utf8StringSplitter)
 
 `Utf8StringSplitter` provides methods (`Split` and `SplitAny`) to split Utf8 strings (`byte` sequences) based on a specified separators.  
-This library is distributed via NuGet, supporting .NET Standard 2.0, .NET Standard 2.1, .NET 6 (.NET 7), .NET 8 and above.
+This library is distributed via NuGet, supporting .NET Standard 2.0, .NET Standard 2.1, .NET 6 (.NET 7), .NET 8, .NET 9, .NET 10(RC1) and above.
 
 > PM> Install-Package [Utf8StringSplitter](https://www.nuget.org/packages/Utf8StringSplitter/)