fix example compilations

Author: coke

doc/Language/101-basics.pod6

@@ -77,7 +77,7 @@ Beth has won 1 match and 4 sets
 
 =head1 Pragma X<C<v6>|v6 (Basics)>
 
-=begin code
+=begin code :solo
 use v6;
 =end code
 
@@ -151,7 +151,7 @@ it's the argument provided to C<open>.
 
 =head1 X<Arrays|array (Basics)>, X<methods|method (Basics)> and X<invocants|invocant (Basics)>
 
-=begin code :preamble<my @names>
+=begin code :preamble<my $file>
 my @names = $file.get.words;
 =end code