Fix incomplete tool tip for best converting entry page in goals conversion overview

<img width="402" alt="image" src="https://user-images.githubusercontent.com/273120/200209265-2db34fd6-94c4-49a1-ba3f-a96aa8c296a3.png">
<img width="417" alt="image" src="https://user-images.githubusercontent.com/273120/200209369-ce1bab20-a138-4523-8f20-6133a47ee6da.png">

see above screenshots. The conversion rate is not shown.

This can be reproduced in our own analytics via Matomo 4.12.3