Change routine to method

doc/Type/Cool.pod6

@@ -858,14 +858,16 @@ C<$pattern> is applied to the remaining characters of C<$string>.
     say "perL 6".samecase("A__a__"); # Perl 6
     say "pERL 6".samecase("Ab");     # Perl 6
 
-=head2 routine uniprop
+=head2 method uniprop
 
 Defined as:
     sub uniprop(Str(Cool), |c)
     method uniprop(|c)
 
-Interprets the invocant as a L<Str|/type/Str>, and returns the unicode property of the first
-character. If no property is specified returns the General Category.
+Interprets the invocant as a L<Str|/type/Str>, and returns the
+L<unicode property|http://userguide.icu-project.org/strings/properties> of the first
+character. If no property is specified returns the
+L<General Category|https://en.wikipedia.org/wiki/Unicode_character_property#General_Category>.
 
     say 'a'.uniprop; # Ll
     say '1'.uniprop; # Nd