[doc] doc/service.texi: Switch the fsf.org link to https.

[Gerald Pfeifer]

Committed.

Gerald

2018-09-16  Gerald Pfeifer  <gerald@pfeifer.com>

	* doc/service.texi (Service): Switch the fsf.org link to https.

Index: doc/service.texi
===================================================================
--- doc/service.texi	(revision 264342)
+++ doc/service.texi	(working copy)
@@ -20,7 +20,7 @@
 @item
 Look in the service directory for someone who might help you for a fee.
 The service directory is found at
-@uref{http://www.fsf.org/resources/service}.
+@uref{https://www.fsf.org/resources/service}.
 @end itemize
 
 For further information, see