fix logo link in doc/gallery_template.html
fix logo link in doc/gallery_template.html

BubuLK/sfepy,BubuLK/sfepy,lokik/sfepy,RexFuzzle/sfepy,rc/sfepy,RexFuzzle/sfepy,RexFuzzle/sfepy,sfepy/sfepy,lokik/sfepy,vlukes/sfepy,vlukes/sfepy,rc/sfepy,vlukes/sfepy,lokik/sfepy,lokik/sfepy,sfepy/sfepy,sfepy/sfepy,BubuLK/sfepy,RexFuzzle/sfepy,rc/sfepy