Fix link to sprintf directives

Closes #4309

Author: coke

doc/Type/Cool.rakudoc

@@ -1332,7 +1332,7 @@ Coerces the invocant to L<C<IO::Path>|/type/IO::Path>.
     method sprintf(*@args)
 
 Returns a string according to a series of L<format
-directives|/routine/sprintf#Directives> that are common in many languages;
+directives|/type/independent-routines#Directives> that are common in many languages;
 the object will be the format string, while the supplied arguments will be
 what's going to be formatted according to it.
 
@@ -1344,7 +1344,7 @@ what's going to be formatted according to it.
     method printf(*@args)
 
 Uses the object, as long as it is a L<format
-string|/routine/sprintf#Directives>, to format and print the arguments
+string|type/independent-routines#Directives>, to format and print the arguments
 
 =for code
 "%.8f".printf(now - now ); # OUTPUT: «-0.00004118»