Change url to explaination about what is kde

doc/onlinehelp/index.docbook

@@ -22,7 +22,7 @@ help and additional information provided by the &kde; community.</para>
 <ulink url="https://userbase.kde.org/Special:myLanguage/An_introduction_to_KDE">An 
 Introduction to &kde;</ulink>&nbsp;</term>
 <listitem>
-<para>Learn more about the <ulink url="https://userbase.kde.org/Special:myLanguage/What_is_KDE">
+<para>Learn more about the <ulink url="https://kde.org/community/whatiskde/">
 &kde; community and its software</ulink> and find information to help you get 
 started. Also, discover what <ulink url="https://userbase.kde.org/Special:myLanguage/Welcome_to_KDE_UserBase">
 UserBase</ulink> is and how it can help you.