Update docs/fundamentals/code-analysis/quality-rules/ca2264.md

Co-authored-by: Bill Wagner <[email protected]>

Author: gewarren

docs/fundamentals/code-analysis/quality-rules/ca2264.md

@@ -26,7 +26,7 @@ When a value that's known to never be null is passed to `ArgumentNullException.T
 
 ## Rule description
 
-`ArgumentNullException.ThrowIfNull` throws when the passed argument is `null`. Certain constructs like non-nullable structs (except for <xref:System.Nullable%601>), 'nameof()' expressions, and 'new' expressions are known to never be null, so `ArgumentNullException.ThrowIfNull` will never throw.
+`ArgumentNullException.ThrowIfNull` throws when the passed argument is `null`. Certain constructs like non-nullable structs (except for <xref:System.Nullable%601>), type parameters known to be non-nullable structs, 'nameof()' expressions, and 'new' expressions are known to never be null, so `ArgumentNullException.ThrowIfNull` will never throw.
 
 In the case of a struct, since `ArgumentNullException.ThrowIfNull` accepts an `object?`, the struct is boxed, which causes an additional performance penalty.