Merge pull request #2609 from treyharris/io-vs-str-example

Make .Str vs .IO example more explicit

Author: treyharris

doc/Language/io-guide.pod6

@@ -268,10 +268,10 @@ value of the L«C<$.CWD> attribute|/type/IO::Path#attribute_CWD». For example,
 code is broken:
 
 =for code
-# WRONG!! .Str DOES NOT USE $.CWD!
 my $path = 'foo'.IO;
 chdir 'bar';
-run <tar -cvvf archive.tar>, ~$path;
+# WRONG!! .Str DOES NOT USE $.CWD!
+run <tar -cvvf archive.tar>, $path.Str;
 
 The L«C<chdir>|/routine/chdir» call changed the value of the current directory,
 but the C<$path> we created is relative to the directory before that change.
@@ -283,9 +283,9 @@ a L«C<Str>|/type/Str» object; they only differ in whether the result is an
 absolute or relative path. So, we can fix our code like this:
 
 =for code
-# RIGHT!! .absolute does consider the value of $.CWD!
 my $path = 'foo'.IO;
 chdir 'bar';
+# RIGHT!! .absolute does consider the value of $.CWD!
 run <tar -cvvf archive.tar>, $path.absolute;
 # Also good:
 run <tar -cvvf archive.tar>, $path.relative;