[office/tellico] doc: Update doc version

Git commit 1c66e55dbc687cfa06fb128bd1184f57b1768bde by Robby Stephenson.
Committed on 23/07/2024 at 11:53.
Pushed by rstephenson into branch 'master'.

Update doc version

M  +1    -1    doc/index.docbook

https://invent.kde.org/office/tellico/-/commit/1c66e55dbc687cfa06fb128bd1184f57b1768bde

diff --git a/doc/index.docbook b/doc/index.docbook
index 63895bb19..93c9cd93b 100644
--- a/doc/index.docbook
+++ b/doc/index.docbook
@@ -51,7 +51,7 @@ Applications xx.yy for docbooks released as Applications
 xx.yy (Applications xx.yy) for docbooks with own version released as Applications
 $applicationname xx.yy for applications with independent release schedule (extragear/playground)
 -->
-<releaseinfo>Tellico 3.5</releaseinfo>
+<releaseinfo>Tellico 4.0</releaseinfo>
 
 <title>The &tellico; Handbook</title>