fix coefficients filename in recovery.py
fix coefficients filename in recovery.py

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