Fix some broken links

part of #4476

Author: coke

doc/Language/create-cli.rakudoc

@@ -55,7 +55,7 @@ called.
 
 The signature of (the candidates of the multi) sub C<MAIN> determines which
 candidate will actually be called using the standard
-L<multi dispatch|/language/glossary#Multi-Dispatch> semantics.
+L<multi dispatch|/language/glossary#Multi-dispatch> semantics.
 
 A simple example:
 

doc/Language/experimental.rakudoc

@@ -21,7 +21,7 @@ and is inherited from
 L<Perl's pack|http://perldoc.perl.org/functions/pack.html>.
 The C<pack> order creates a L<C<Buf>|/type/Buf> by packing data structures in a certain
 way given by a I<packing string> with the options shown
-L<in the description of C<unpack>|/type/Blob#method_unpack>. You turn it on by
+L<in the description of C<unpack>|/type/Blob#routine_unpack>. You turn it on by
 inserting this pragma at the beginning of your program:
 
     use experimental :pack;
@@ -45,7 +45,7 @@ Not all of the symbols above are guaranteed to be implemented, and the roadmap
 does not include a fixed date for getting out of that stage.
 
 Please see also documentation for L<C<pack>|/type/Blob#sub_pack> and
-L<C<unpack>|/type/Blob#method_unpack> in the L<C<Blob>|/type/Blob> page.
+L<C<unpack>|/type/Blob#routine_unpack> in the L<C<Blob>|/type/Blob> page.
 
 =head2 X<B<macros>|Language,macros>
 

doc/Language/glossary.rakudoc

@@ -519,7 +519,7 @@ Short for "problem". As in "that's not the pb".
 
 =head2 X<PR|Reference,PR>
 
-See L<Pull Request|#Pull Request>.
+See L<Pull request|#Pull request>.
 
 =head2 X<P5|Reference,P5>
 
@@ -982,7 +982,7 @@ the symbol table.
 The current human-readable description of the Raku language. Still in
 development. Much more a community effort than the
 L<Apocalypses|#Apocalypse> and L<Exegeses|#Exegesis> were. The current
-state of the language is reflected by L<roast|#roast>, its L<test suite|#test suite>, not
+state of the language is reflected by L<roast|#roast>, its L<test suite|#Test suite>, not
 the synopses where speculative material is not always so flagged or more
 recent additions have not been documented. This is even more true of
 material that has not been yet implemented.

doc/Language/io-guide.rakudoc

@@ -200,7 +200,7 @@ it's best to ensure all the handles get closed right away. So, you should
 always ensure the L<C<Seq>|/type/Seq> from L<C<IO::Path>|/type/IO::Path>'s
 L«C<.words>|/type/IO::Path#method_words» and
 L«C<.lines>|/type/IO::Path#method_lines» methods is
-L<fully reified|/language/glossary#index-entry-Reify>; and the limit argument
+L<fully reified|/language/glossary#Reify>; and the limit argument
 is there to help you with that.
 
 =head4 Using IO::Handle

doc/Language/list.rakudoc

@@ -405,7 +405,7 @@ memory:
     });
     say @divisors; # OUTPUT: «[2 5 7]␤»
 
-The L<C<gather> statement|/language/control#index-entry-lazy_list_gather>
+The L<C<gather> statement|/language/control#gather/take>
 creates a lazy list, which is eagerly evaluated when assigned to C<@divisors>.
 
 =head2 Flattening "context"