Fix DefaultPatternMatchCB::is_self_ground quotation update
Fix DefaultPatternMatchCB::is_self_ground quotation update

rTreutlein/atomspace,ArvinPan/atomspace,AmeBel/atomspace,misgeatgit/atomspace,misgeatgit/atomspace,rTreutlein/atomspace,ArvinPan/atomspace,yantrabuddhi/atomspace,AmeBel/atomspace,rTreutlein/atomspace,ArvinPan/atomspace,yantrabuddhi/atomspace,yantrabuddhi/atomspace,misgeatgit/atomspace,misgeatgit/atomspace,rTreutlein/atomspace,AmeBel/atomspace,yantrabuddhi/atomspace,inflector/atomspace,inflector/atomspace,inflector/atomspace,inflector/atomspace,AmeBel/atomspace,AmeBel/atomspace,rTreutlein/atomspace,yantrabuddhi/atomspace,misgeatgit/atomspace,ArvinPan/atomspace,inflector/atomspace