[pushed] libstdc++: Move www.graphviz.org to https

[Gerald Pfeifer]

With this there should be only one or two problem links left in all of the 
libstdc++ docs. :-)

Pushed.

Gerald


libstdc++-v3/ChangeLog:

	* doc/xml/manual/documentation_hacking.xml: Move www.graphviz.org
	to https.
	* doc/html/manual/documentation_hacking.html: Regenerate.
---
 libstdc++-v3/doc/html/manual/documentation_hacking.html | 2 +-
 libstdc++-v3/doc/xml/manual/documentation_hacking.xml   | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/libstdc++-v3/doc/html/manual/documentation_hacking.html b/libstdc++-v3/doc/html/manual/documentation_hacking.html
index 24df9bd9481..047a62e0831 100644
--- a/libstdc++-v3/doc/html/manual/documentation_hacking.html
+++ b/libstdc++-v3/doc/html/manual/documentation_hacking.html
@@ -122,7 +122,7 @@
       </p><p>
 	To generate the pretty pictures and hierarchy
 	graphs, the
-	<a class="link" href="http://www.graphviz.org" target="_top">Graphviz</a> package
+	<a class="link" href="https://www.graphviz.org" target="_top">Graphviz</a> package
 	will need to be installed. For PDF
 	output, <a class="link" href="https://tug.org/applications/pdftex/" target="_top">
 	pdflatex</a> is required as well as a number of TeX packages
diff --git a/libstdc++-v3/doc/xml/manual/documentation_hacking.xml b/libstdc++-v3/doc/xml/manual/documentation_hacking.xml
index 20f96ed7205..692b724ca11 100644
--- a/libstdc++-v3/doc/xml/manual/documentation_hacking.xml
+++ b/libstdc++-v3/doc/xml/manual/documentation_hacking.xml
@@ -271,7 +271,7 @@
       <para>
 	To generate the pretty pictures and hierarchy
 	graphs, the
-	<link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="http://www.graphviz.org">Graphviz</link> package
+	<link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="https://www.graphviz.org">Graphviz</link> package
 	will need to be installed. For PDF
 	output, <link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="https://tug.org/applications/pdftex/">
 	pdflatex</link> is required as well as a number of TeX packages
-- 
2.39.2