Update system.pod6

Fix bad link (missing |) and change from entry target to target.

Author: finanalyst

doc/Language/system.pod6

@@ -7,7 +7,7 @@
 =head1 Getting arguments through the command line
 
 The simplest way is to use the
-L<C<@*ARGS>|/language/variables#index-entry-%24%2AARGS> variable to obtain
+L<C<@*ARGS>|/language/variables#%24%2AARGS> variable to obtain
 arguments from the command line; this array will contain the strings that follow
 the program name. L<C<%*ENV>|/language/variables#Runtime_environment> will
 contain the environment variables, so that if you use:
@@ -25,7 +25,7 @@ This will fail if the environment variable C<API_KEY> has not been defined
 previously.
 
 Perl 6 has a better way to deal with command line arguments if they represent
-file names: the L<C<$*ARGFILES>/language/variables#index-entry-%24%2AARGFILES>
+file names: the L<C<$*ARGFILES>|/language/variables#%24%2AARGFILES>
 dynamic variable.
 
 =begin code
@@ -81,4 +81,4 @@ C<setprotoent>. L<Search and install C<P5> modules|https://modules.perl6.org/sea
 
 =end pod
 
-# vim: expandtab softtabstop=4 shiftwidth=4 ft=perl6
+# vim: expandtab softtabstop=4 shiftwidth=4 ft=perl6