Update ValueType.xml (#3226)

See https://github.com/dotnet/coreclr/issues/26833

Author: AaronRobinsonMSFT

xml/System/ValueType.xml

@@ -151,7 +151,7 @@
 ## Remarks  
  The <xref:System.ValueType.Equals%28System.Object%29?displayProperty=nameWithType> method overrides <xref:System.Object.Equals%28System.Object%29?displayProperty=nameWithType> and provides the default implementation of value equality for all value types in the .NET Framework.  
   
- If none of the fields of the current instance and `obj` are reference types, the <xref:System.ValueType.Equals%2A> method performs a byte-by-byte comparison of the two objects in memory. Otherwise, it uses reflection to compare the corresponding fields of `obj` and this instance.  
+ The default implementation calls <xref:System.Object.Equals%28System.Object%29?displayProperty=nameWithType> on each field of the current instance and `obj` and returns `true` if all fields are equal.
   
 > [!TIP]
 >  Particularly if your value type contains fields that are reference types, you should override the <xref:System.ValueType.Equals%28System.Object%29> method. This can improve performance and enable you to more closely represent the meaning of equality for the type.