[gupnp] Use freshen DocBook 4.5 DTD in xml documents

[Jens Georg <jensgeorg src gnome org>]

commit c58738b20cf3575bfbad1a95e201fff7a8c0d4f8
Author: Tomasz Kłoczko <kloczek github com>
Date:   Tue Aug 30 11:47:17 2022 +0000

    Use freshen DocBook 4.5 DTD in xml documents
    
    Switch to "OASIS//DocBook XML V4.5" DTD.
    Signed-off-by: Tomasz Kłoczko <kloczek github com>

 doc/gupnp-binding-tool.xml.in | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/doc/gupnp-binding-tool.xml.in b/doc/gupnp-binding-tool.xml.in
index 1e07f93..e71fdec 100644
--- a/doc/gupnp-binding-tool.xml.in
+++ b/doc/gupnp-binding-tool.xml.in
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN" 
"http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd";>
+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN" 
"http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd";>
 
 <refentry id="gupnp-binding-tool" xmlns:xi="http://www.w3.org/2003/XInclude";>
   <refmeta>