Update README.md

Author: ibrahimatay

README.md

@@ -51,15 +51,15 @@ Examples of C# programming, with the goal of tracking and staying up-to-date wit
   * [Tuple types](TupleTypes/) 
   * [Numeric literal syntax improvement](NumericLiteralSyntaxImprovements/)
   * [Immutable collections](ImmutableCollections/) 
-  * [in parameter modifier](InParameterModifier/) 
+  * [in parameter modifier](InParameterModifier/)
+  * [ArrayPool](ArrayPool/)
+  * [MemoryPool](MemoryPool/)
 * C# 6
   * [Using static directive](UsingStaticDirective/) 
   * [Collection initializers](CollectionInitializers/)
 * C# 4 & others
   * [Dynamic types](DynamicTypes/)
   * [Multicast Delegates](MulticastDelegates/)
-  * [ArrayPool](ArrayPool/)
-  * [MemoryPool](MemoryPool/)
 
 ## Notes
 - [Which C# version is included in which framework version?](https://learn.microsoft.com/en-us/dotnet/csharp/language-reference/configure-language-version)