Code style fix

Author: OronDF343

CommunityToolkit.HighPerformance/Streams/Sources/ArrayOwner.cs

@@ -79,9 +79,6 @@ public Span<byte> Span
     public Memory<byte> Memory
     {
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        get
-        {
-            return this.array.AsMemory(this.offset, this.length);
-        }
+        get => this.array.AsMemory(this.offset, this.length);
     }
 }

CommunityToolkit.HighPerformance/Streams/Sources/MemoryManagerOwner.cs

@@ -66,9 +66,6 @@ public Span<byte> Span
     public Memory<byte> Memory
     {
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        get
-        {
-            return this.memoryManager.Memory.Slice(this.offset, this.length);
-        }
+        get => this.memoryManager.Memory.Slice(this.offset, this.length);
     }
 }