Item 27: §13.13 using statement prose matches grammar

Replace both occurrences of `local_variable_declaration` with `non_ref_local_variable_declaration` in the prose.

Author: BillWagner

standard/statements.md

@@ -1937,7 +1937,7 @@ non_ref_local_variable_declaration
 
 A ***resource type*** is either a class or non-ref struct that implements either or both of the `System.IDisposable` or `System.IAsyncDisposable` interfaces, which includes a single parameterless method named `Dispose` and/or `DisposeAsync`; or a ref struct that includes a method named `Dispose` having the same signature as that declared by `System.IDisposable`. Code that is using a resource can call `Dispose` or `DisposeAsync` to indicate that the resource is no longer needed.
 
-If the form of *resource_acquisition* is *local_variable_declaration* then the type of the *local_variable_declaration* shall be either `dynamic` or a resource type. If the form of *resource_acquisition* is *expression* then this expression shall have a resource type. If `await` is present, the resource type shall implement `System.IAsyncDisposable`.  A `ref struct` type cannot be the resource type for a `using` statement with the `await` modifier.
+If the form of *resource_acquisition* is *non_ref_local_variable_declaration* then the type of the *non_ref_local_variable_declaration* shall be either `dynamic` or a resource type. If the form of *resource_acquisition* is *expression* then this expression shall have a resource type. If `await` is present, the resource type shall implement `System.IAsyncDisposable`.  A `ref struct` type cannot be the resource type for a `using` statement with the `await` modifier.
 
 Local variables declared in a *resource_acquisition* are read-only, and shall include an initializer. A compile-time error occurs if the embedded statement attempts to modify these local variables (via assignment or the `++` and `--` operators), take the address of them, or pass them as reference or output parameters.