change p6 to raku, chg .perl to .raku

doc/Language/5to6-nutshell.pod6

@@ -1518,7 +1518,7 @@ In Raku this is similar, one merely needs to change a number!  As you
 probably guessed, you just need to use X<C<PERL6LIB>|PERL6LIB>:
 
 =for code :lang<shell>
-$ PERL6LIB="/some/module/lib" raku program.p6
+$ PERL6LIB="/some/module/lib" raku program.raku
 
 In Perl 5 one uses the ':' (colon) as a directory separator for C<PERL5LIB>, but
 in Raku one uses the ',' (comma).  For example:
@@ -1878,4 +1878,4 @@ live on GitHub. An online converter may become available at some point.
 
 =end pod
 
-# vim: expandtab softtabstop=4 shiftwidth=4 ft=perl6
+# vim: expandtab softtabstop=4 shiftwidth=4 ft=raku

doc/Language/classtut.pod6

@@ -667,7 +667,7 @@ defined in the Employee class as though they were from the Programmer class.
 =begin code :preamble<class Programmer {}>
 my $programmer = Programmer.new(
     salary => 100_000,
-    known_languages => <Perl5 Perl6 Erlang C++>,
+    known_languages => <Perl5 Raku Erlang C++>,
     favorite_editor => 'vim'
 );
 
@@ -709,8 +709,8 @@ my $cook = Cook.new(
 );
 
 $cook.cook( 'pizza' );       # OUTPUT: «Cooking pizza␤»
-say $cook.utensils.perl;     # OUTPUT: «["spoon", "ladle", "knife", "pan"]␤»
-say $cook.cookbooks.perl;    # OUTPUT: «["The Joy of Cooking"]␤»
+say $cook.utensils.raku;     # OUTPUT: «["spoon", "ladle", "knife", "pan"]␤»
+say $cook.cookbooks.raku;    # OUTPUT: «["The Joy of Cooking"]␤»
 say $cook.salary;            # OUTPUT: «40000␤»
 
 my $baker = Baker.new(
@@ -720,8 +720,8 @@ my $baker = Baker.new(
 );
 
 $baker.cook('brioche');      # OUTPUT: «Baking a tasty brioche␤»
-say $baker.utensils.perl;    # OUTPUT: «["self cleaning oven"]␤»
-say $baker.cookbooks.perl;   # OUTPUT: «["The Baker's Apprentice"]␤»
+say $baker.utensils.raku;    # OUTPUT: «["self cleaning oven"]␤»
+say $baker.cookbooks.raku;   # OUTPUT: «["The Baker's Apprentice"]␤»
 say $baker.salary;           # OUTPUT: «50000␤»
 =end code
 
@@ -753,7 +753,7 @@ my $geek = GeekCook.new(
     books           => 'Learning Raku',
     utensils        => ('stainless steel pot', 'knife', 'calibrated oven'),
     favorite_editor => 'MacVim',
-    known_languages => <Perl6>
+    known_languages => <Raku>
 );
 
 $geek.cook('pizza');
@@ -807,7 +807,7 @@ my Programmer $o .= new;
 if $o ~~ Employee { say "It's an employee" };
 say $o ~~ GeekCook ?? "It's a geeky cook" !! "Not a geeky cook";
 say $o.^name;
-say $o.perl;
+say $o.raku;
 say $o.^methods(:local)».name.join(', ');
 =end code
 
@@ -829,13 +829,13 @@ C<GeekCook>.
 
 The call C<$o.^name> tells us the type of C<$o>: in this case C<Programmer>.
 
-C<$o.perl> returns a string that can be executed as Perl code, and
+C<$o.raku> returns a string that can be executed as Raku code, and
 reproduces the original object C<$o>. While this does not work perfectly in
 all cases, it is very useful for debugging simple objects.
 N<For example, closures cannot easily be reproduced this way; if you
 don't know what a closure is don't worry. Also current implementations have
 problems with dumping cyclic data structures this way, but they are expected
-to be handled correctly by C<.perl> at some point.>
+to be handled correctly by C<.raku> at some point.>
 X<|^methods>
 C<$o.^methods(:local)> produces a list of L<Method|/type/Method>s that can be
 called on C<$o>. The C<:local> named argument limits the returned methods to
@@ -856,7 +856,7 @@ unsurprisingly returns the class name.
 Introspection is very useful for debugging and for learning the language
 and new libraries. When a function or method returns an object you don't
 know about, by finding its type with C<.^name>, seeing a construction recipe
-for it with C<.perl>, and so on, you'll get a good idea of what its return
+for it with C<.raku>, and so on, you'll get a good idea of what its return
 value is. With C<.^methods>, you can learn what you can do with the class.
 
 But there are other applications too. For instance, a routine that serializes
@@ -906,4 +906,4 @@ it in a narrative way.
 
 =end pod
 
-# vim: expandtab softtabstop=4 shiftwidth=4 ft=perl6
+# vim: expandtab softtabstop=4 shiftwidth=4 ft=raku