Fix of the example code

The example was obviously corrupted with redundand whitespace cleanup commit.
VynceMontgomery++

doc/Type/Cool.pod6

@@ -1055,7 +1055,7 @@ This method can be used as part of an C<IO::Path> to process a file
 line-by-line, since C<IO::Path> objects inherit from C<Cool>, e.g.:
 
 =begin code :skip-test
-'huge-csv'.IO.lines -> $line {
+for 'huge-csv'.IO.lines -> $line {
     # Do something with $line
 }