[wwwdocs,fortran] readings.html -- Fix link to Michel Olagnon's Fortran 90 List

[Gerald Pfeifer]

The old link did not work any longer, without any redirect. This
seems to be a valid replacement.

Committed.

Gerald

Index: readings.html
===================================================================
RCS file: /cvs/gcc/wwwdocs/htdocs/readings.html,v
retrieving revision 1.302
diff -u -r1.302 readings.html
--- readings.html 24 Sep 2018 21:51:59 -0000 1.302
+++ readings.html 29 Sep 2018 12:26:56 -0000
@@ -466,7 +466,7 @@
<li>Other resources:
<ul>
<li>
- <a href="http://www.ifremer.fr/ditigo/molagnon/fortran90/engfaq.html">
+ <a href="http://www.fortran-2000.com/MichelList/">
Michel Olagnon's Fortran 90 List</a> contains a "Tests and
Benchmarks" section mentioning commercial testsuites.
</li>