Updates typed pointer info, refs #1513

Author: JJ

doc/Language/nativecall.pod6

@@ -497,8 +497,6 @@ say "foo is {$foo.a_string} and {$foo.an_int32}";
 
 =head1 Typed Pointers
 
-=comment TODO
-
 You can type your C<Pointer> by passing the type as a parameter. It works with
 the native type but also with C<CArray> and C<CStruct> defined types. NativeCall
 will not implicitly allocate the memory for it even when calling C<new> on them.
@@ -556,6 +554,10 @@ for 1 ..^ $n {
 }
 =end code
 
+Void pointers can also be used by declaring them C<Pointer[void]>. Please
+consult L<the native types documentation|/language/nativetypes#The_void_type>
+for more information on the subject.
+
 =head1 Strings
 
 =head2 Explicit memory management