Make wrong code being wrong more obvious

For those who read the code but not the prose

Author: zoffixznet

doc/Type/IO.pod6

@@ -42,6 +42,7 @@ By default, only C<:d> test is performed.
 
 Note that the following construct is a mistake:
 
+    # WRONG! DO NOT DO THIS!
     my $*CWD = chdir '/tmp/';
 
 Use L«C<indir>|/routine/indir» instead.
@@ -71,6 +72,7 @@ to specify which file tests to perform.
 
 Note that the following construct is a mistake:
 
+    # WRONG! DO NOT DO THIS!
     my $*CWD = &*chdir('/tmp');
 
 Use the following, instead; or see L«C<indir>|/routine/indir» if