change ugly indextable?

[Rick Janda]

I write a documentation and want to insert an index.
But the indexlist looks a little bit strange:

maximierter Modus, 20 
Mehrfenstermodus, 17
MultiWindow Menü, 11

What need I change that it would look in a more usual manner like this?

maximierter Modus...... 20
Mehrfenstermodus....... 17
MultiWindow Menü....... 11

Thank you,
Rick Janda