Index link and symlink as methods/routine

This would close #2121. They are searchable now as routine and
methods, with the notation "sub". If this is not address
satisfactorily the OP, feel free to reopen.

Author: JJ

doc/Type/IO/Path.pod6

@@ -480,11 +480,11 @@ for each directory in the path, and any symlinks found are followed.
     my $io = "foo/./bar/..".IO.resolve;      # now "/" (the parent of "/baz")
 
 If C<:$completely>, which defaults to C<False>, is set to a true value, the
-method will L«C<fail>|/routine/fail» with C<X::IO::Resolve>
-if it cannot completely resolve the path,
-otherwise, it will resolve as much as possible, and will merely perform
-L«C<cleanup>|/routine/cleanup» of the rest of the path. The last part of the
-path does B<NOT> have to exist to C<:$completely> resolve the path.
+method will L«C<fail>|/routine/fail» with C<X::IO::Resolve> if it cannot
+completely resolve the path, otherwise, it will resolve as much as possible, and
+will merely perform L«C<cleanup>|/routine/cleanup» of the rest of the path. The
+last part of the path does B<NOT> have to exist to C<:$completely> resolve the
+path.
 
 NOTE: Currently (April 2017) this method doesn't work correctly on all
 platforms, e.g. Windows, since it assumes POSIX semantics.
@@ -837,12 +837,10 @@ Defined as:
 
     multi method chdir(IO::Path:D: Str() $path, :$d = True, :$r, :$w, :$x)
 
-B<DEPRECATION NOTICE:> this method will be deprecated in C<6.d> language
-and removed in C<6.e>. Do
-not use it for new code. Instead, create a new path or use
-L«C<add>|/routine/add» method. For altering current working
-directory see L«C<&chdir>|/routine/chdir» and L«C<&*chdir>|/routine/&*chdir»
-subroutines.
+B<DEPRECATION NOTICE:> this method will be deprecated in C<6.d> language and
+removed in C<6.e>. Do not use it for new code. Instead, create a new path or use
+L«C<add>|/routine/add» method. For altering current working directory see
+L«C<&chdir>|/routine/chdir» and L«C<&*chdir>|/routine/&*chdir» subroutines.
 
 Contrary to the name, the C<.chdir> method does not change any directories,
 but merely concatenates the given C<$path> to the invocant and returns the
@@ -868,6 +866,7 @@ L<fails|/routine/fail> with L<X::IO::Mkdir> if directory cannot be created.
 
 See also L«C<mode>|/routine/mode» for explanation and
 valid values for C<$mode>.
+
 =head2 routine rmdir
 
 Defined as:
@@ -971,6 +970,8 @@ Defined as:
 Coerces L«C<.basename>|/routine/basename» to L<Int>. L<Fails|/routine/fail>
 with C<X::Str::Numeric> if base name is not numerical.
 
+X<|symlink (routine)>
+X<|symlink (method)>
 =head2 routine symlink
 
 Defined as:
@@ -987,6 +988,8 @@ To create a hard link, see L«C<link>|/routine/link».
 B<Note:> on Windows, creation of symbolic links may require escalated
 privileges.
 
+X<|link (routine)>
+X<|link (method)>
 =head2 routine link
 
 Defined as: