fix project names

csharp-oop-simplified2/Domain/IAccountRepository.cs

@@ -0,0 +1,8 @@
+namespace CsharpOopSimplified2.Domain;
+
+/// Repository abstraction used to load and save accounts
+public interface IAccountRepository
+{
+    Account? GetById(Guid id);
+    void Save(Account account);
+}