[wwwdocs] gcc-4.9/changes.html -- tweak openmp.org link

[Gerald Pfeifer]

This one seems to have escaped my http->https changes for openmp.org
the last month(s).

Committed.

Gerald

Index: gcc-4.9/changes.html
===================================================================
RCS file: /cvs/gcc/wwwdocs/htdocs/gcc-4.9/changes.html,v
retrieving revision 1.96
diff -u -r1.96 changes.html
--- gcc-4.9/changes.html	30 Sep 2018 14:38:52 -0000	1.96
+++ gcc-4.9/changes.html	1 Dec 2018 17:39:57 -0000
@@ -125,7 +125,7 @@
 <h2 id="languages">New Languages and Language specific improvements</h2>
 
   <ul>
-    <li>Version 4.0 of the <a href="http://www.openmp.org/specifications/"
+    <li>Version 4.0 of the <a href="https://www.openmp.org/specifications/"
 	>OpenMP specification</a> is now supported in the C and C++ compilers
 	and starting with the 4.9.1 release also in the Fortran compiler.
 	The new <code>-fopenmp-simd</code> option can be used to enable OpenMP's