Bad page permalink

Hi, dear Reader,
I have worpress 3.5.2 turkish version. My web site is Akvaryum

On my blog, some links automatically adding this strange suffice: %E2%80%8E/

Like this link…. https://www.akvaryum.biz/antalyadaki-akvaryumcular/%20%E2%80%8E or https://www.akvaryum.biz/istanbul-akvaryumcular-listesi/%20%E2%80%8E

This is an example for one page. And google webmaster tools indicating at 404 pages.

I am unable to fix this. Is there anyone here who could help me out with this?!
Thanks