In some cases the localized word for "Wikipedia" is too short and the spacing between the letters becomes too big. See Turkish Logo for example.
In this case you are allowed to reduce the width of the textfield:
- Open Transform window (Top Navigation: "Window": "Transform")
- Make sure the textfield is selected
- Change width
- Make sure the x-position remains at 67,5!
Note: Never use a width less than 103px! The word "WikipediA" may not be less wide than the globe!