Update Utf8Formatter.cs

Author: JunaMeinhold

Hexa.NET.Utilities/Text/Utf8Formatter.cs

@@ -46,7 +46,9 @@ public static unsafe bool Is<T>(this TypedReference reference, [MaybeNullWhen(fa
 #endif
 
     /// <summary>
-    /// Will be moved to Hexa.NET.Utilities later.
+    /// Provides high-performance formatting utilities for UTF-8 encoded strings using raw pointers.
+    /// Designed for scenarios where direct memory manipulation is needed for speed or low-level control.
+    /// This class operates exclusively on raw pointers and does not perform any managed string allocations.
     /// </summary>
     public static class Utf8Formatter
     {
@@ -1858,4 +1860,4 @@ private unsafe static int CountAhead(char** format, char* formatEnd, char target
             return count;
         }
     }
-}
+}