fixed wrong identation

git-svn-id: https://dng.biozentrum.unibas.ch/svn/openstructure/trunk@2424 5a81b35b-ba03-0410-adc8-b2c5c5119f08

examples/img/fft_li.py

 import sys
 import ost.img.alg
 if len(sys.argv)<2:
-images=io.LoadImageList(['square.png'])  
+  images=io.LoadImageList(['square.png'])  
 else:
   images=io.LoadImageList(sys.argv[1:])
 viewers=[]