[wwwdocs] spam.html - www.abuse.net now uses https

[Gerald Pfeifer]

Applied.

Gerald

Index: spam.html
===================================================================
RCS file: /cvs/gcc/wwwdocs/htdocs/spam.html,v
retrieving revision 1.7
diff -u -r1.7 spam.html
--- spam.html	21 Sep 2006 14:17:36 -0000	1.7
+++ spam.html	29 Oct 2017 15:10:32 -0000
@@ -15,7 +15,7 @@
 avoid creating unnecessary traffic on the list.</p>
 
 <p> In additional to the information provided below, you might want to check
-out <a href="http://www.abuse.net">www.abuse.net</a> for further information
+out <a href="https://www.abuse.net">www.abuse.net</a> for further information
 about SPAM.</p>
 
 <pre>