proper prefix in templates: wikiqs -> qswiki

template/quitesimple/page_view_revision

@@ -1,6 +1,6 @@
-{wikiqs:include:page_header}
+{qswiki:include:page_header}
 <main id="content">
-<b>Showing revision: {wikiqs:var:revision}</b><hr>
-{wikiqs:var:content}
+<b>Showing revision: {qswiki:var:revision}</b><hr>
+{qswiki:var:content}
 </main>
-{wikiqs:include:page_footer}
+{qswiki:include:page_footer}