Add missing URLs in the documentation.

	* doc/nolimips.texi (Top): Here.

doc/nolimips.texi

@@ -99,9 +99,11 @@ Recherche et Dévelopment de l'@acronym{EPITA}}, i.e., the Research and
 Development Lab of @acronym{EPITA}, the @href{http://www.epita.fr, Ecole
 Pour l'Informatique et les Techniques Avancées}.
 
-@href{FIXME:, Andrew Appel's home page} includes links to material
+@href{http://www.cs.princeton.edu/~appel/, Andrew Appel's home page}
+includes links to material
 related to compilers theory, and some information about the
-@href{FIXME:, Modern Compiler Implementation} book series.
+@href{http://www.cs.princeton.edu/~appel/modern/, Modern Compiler
+Implementation} book series.
 
 More information on Python can be found on
 @href{http://www.python.org, Python Home Page}.