fix: Map doesn't preserve order. Usage of basic Dictionary

Author: HulinCedric

solution/c#/Day14/Day14/LangExt/FizzBuzz.cs

@@ -7,12 +7,13 @@ public static class FizzBuzz
         private const int Min = 1;
         private const int Max = 100;
 
-        private static readonly Map<int, string> Mapping =
-            Map.create(
-                (15, "FizzBuzz"),
-                (3, "Fizz"),
-                (5, "Buzz")
-            );
+        private static readonly Dictionary<int, string> Mapping =
+            new()
+            {
+                { 15, "FizzBuzz" },
+                { 3, "Fizz" },
+                { 5, "Buzz" }
+            };
 
         public static Option<string> Convert(int input)
             => IsOutOfRange(input)