Fix typo endinanness -> endianness (#48319)

diff --git a/src/libraries/System.Private.CoreLib/src/System/Buffers/Binary/Reader.cs b/src/libraries/System.Private.CoreLib/src/System/Buffers/Binary/Reader.cs
index d3dd478..034bd7c 100644 (file)
--- a/src/libraries/System.Private.CoreLib/src/System/Buffers/Binary/Reader.cs
+++ b/src/libraries/System.Private.CoreLib/src/System/Buffers/Binary/Reader.cs
@@ -11,7 +11,7 @@ namespace System.Buffers.Binary
     /// </summary>
     /// <remarks>
     /// For native formats, MemoryExtensions.Read{T}; should be used.
-    /// Use these helpers when you need to read specific endinanness.
+    /// Use these helpers when you need to read specific endianness.
     /// </remarks>
     public static partial class BinaryPrimitives
     {