change the appenics name

[γεώργιος βερόπουλος]

Hi  i use  the    statement  \begin{appendix}  \end{appendix}   with  xgreek support package  and the  output is  

ΠΑΡΑΡΤΗΜΑ  Α'   the  A  is  woth  '   i can  delete this  







thank you  in advance

George  P. Veropoulos
MSc, PhD 
Γεώργιος  Π. ΒερόπουλοςΔιδάκτωρ Φυσικής  ΕΚΠΑ
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