[education/kstars] doc: Update handbook version to 3.6.3

[Jasem Mutlaq]

Git commit 05458df8ec4d6c0d76acb69afefba289681c5250 by Jasem Mutlaq.
Committed on 31/01/2023 at 08:30.
Pushed by mutlaqja into branch 'master'.

Update handbook version to 3.6.3

M  +3    -3    doc/index.docbook

https://invent.kde.org/education/kstars/commit/05458df8ec4d6c0d76acb69afefba289681c5250

diff --git a/doc/index.docbook b/doc/index.docbook
index b88abd247..ea032690e 100644
--- a/doc/index.docbook
+++ b/doc/index.docbook
@@ -210,14 +210,14 @@
 </authorgroup>
 
 <copyright>
-<year>2001-2022</year>
+<year>2001-2023</year>
 <holder>&Jason.Harris; and the &kstars; Team</holder>
 </copyright>
 
 <legalnotice>&FDLNotice;</legalnotice>
 
-<date>2022-09-29</date>
-<releaseinfo>3.6.1</releaseinfo>
+<date>2023-02-01</date>
+<releaseinfo>3.6.3</releaseinfo>
 
 <abstract>
 <para>