Removed spaces from top-level directory names.

Spaces tend to cause annoyances in a Unix-style shell environment.
This change fixes that.

51_Hurkle/csharp/src/hurkle/GuessViewModel.cs

@@ -0,0 +1,7 @@
+namespace hurkle
+{
+    internal class GuessViewModel
+    {
+        public int CurrentGuessNumber {get;init;}
+    }
+}