Update rakudo-star content

track language rename and refresh some links

rakudo-star/content.md

@@ -1,16 +1,14 @@
 # What is Rakudo Star?
 
-Rakudo Star is a Perl 6 distribution designed for use by early adopters of the language. It includes a virtual machine (the JVM or MoarVM), the Rakudo Perl 6 compiler, and a suite of modules that users may find useful. This image includes the MoarVM backend for the compiler.
+Rakudo Star is a Raku distribution designed for use by early adopters of the language. It includes a virtual machine (the JVM or MoarVM), the Rakudo compiler, and a suite of modules that users may find useful. This image includes the MoarVM backend for the compiler.
 
 Project homepage: [http://rakudo.org](http://rakudo.org)
 
 GitHub repository: [https://github.com/rakudo/star](https://github.com/rakudo/star)
 
-The Dockerfile responsible: [http://github.com/perl6/docker/tree/master/Dockerfile](http://github.com/perl6/docker/tree/master/Dockerfile)
+The Dockerfile responsible: [http://github.com/raku/docker/tree/master/Dockerfile](http://github.com/raku/docker/tree/master/Dockerfile)
 
-Perl 6 Language Specification: [http://design.perl6.org/](http://design.perl6.org/)
-
-Perl 6 Language Documentation: [http://doc.perl6.org/](http://doc.perl6.org/)
+Perl 6 Language Documentation: [http://docs.raku.org/](http://docs.raku.org/)
 
 %%LOGO%%
 
@@ -20,18 +18,18 @@ Simply running a container with the image will launch a Perl 6 REPL:
 
 ```console
 $ docker run -it %%IMAGE%%
-> say 'Hello, Perl!'
-Hello, Perl!
+> say 'Hello, Raku!'
+Hello, Raku!
 ```
 
-You can also provide perl6 command line switches to `docker run`:
+You can also provide raku command line switches to `docker run`:
 
 ```console
-$ docker run -it %%IMAGE%% -e 'say "Hello!"'
+$ docker run -it %%IMAGE%% raku -e 'say "Hello!"'
 ```
 
 # Contributing/Getting Help
 
-Many Perl 6 developers are present on #perl6 on Freenode.
+Many Perl 6 developers are present on #raku on Freenode.
 
-Issues for Rakudo are tracked in RT: [https://rt.perl.org/](https://rt.perl.org/)
+Issues for Rakudo are tracked in [on GitHub](https://github.com/rakudo/rakudo/issues/).