Update README.md

Author: dodyg

README.md

@@ -4,7 +4,7 @@
 - Samples for new features of ASP.NET Core **7.0** are available [here](/projects/.net7) (45).
 
 > [!NOTE]
-> This repository is WIP. I am updating all the previous samples from .NET 6/7 to .NET 8. Check the previous stable branch ([6.0](https://github.com/dodyg/practical-aspnetcore/tree/net6.0/)) if you want to browse the existings samples.
+> This repository is WIP. I am updating all the previous samples from .NET 6/7 to .NET 8. Check the previous stable branch ([6.0](https://github.com/dodyg/practical-aspnetcore/tree/net6.0/)) if you want to browse the existing stable samples.
 
 Greetings from Cairo, Egypt. You can [sponsor](https://github.com/sponsors/dodyg) this project [here](https://github.com/sponsors/dodyg).