fix docstring of Approximation.describe_geometry()
fix docstring of Approximation.describe_geometry()

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