Adds link to ACCEPTS.

Refs #561

Author: JJ

doc/Type/Signature.pod6

@@ -823,7 +823,7 @@ and follows the same semantics as L<Capture> C<$topic>:
 
 Since L«C<where> clauses|/type/Signature#index-entry-where_clause_(Signature)»
 are not introspectable, the method cannot determine whether two signatures
-L<ACCEPTS> the same sort of C<where>-constrained parameters. Such comparisons
+L<ACCEPTS|/type/Signature#method_ACCEPTS> the same sort of C<where>-constrained parameters. Such comparisons
 will return C<False>. This includes signatures with literals, which are just
 sugar for the C<where>-constraints: