po: Fix some typography issues in the Croatian translation.

[Francois Gouget]

---

These are all failry straightforward trailing colon, full stop, 
ellipsis, or double-space issues.


Based on the Wine-PO report:
http://fgouget.free.fr/wine-po/

Still, let me know if I got something wrong.

 po/hr.po |   46 +++++++++++++++++++++++-----------------------
 1 file changed, 23 insertions(+), 23 deletions(-)
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