fix link to subsection (SF bug #1311674)

Doc/lib/libstdtypes.tex

@@ -1295,8 +1295,10 @@ The design of the set types was based on lessons learned from the
 \module{sets} module.
      
 \begin{seealso}     
-  \seemodule[comparison-to-builtin-set]{sets}{Differences between
-     the \module{sets} module and the built-in set types.}					      
+  \seelink{comparison-to-builtin-set.html}
+          {Comparison to the built-in set types}
+          {Differences between the \module{sets} module and the
+           built-in set types.}					      
 \end{seealso}