Fix issue in generation of detection expression documentation
Fix issue in generation of detection expression documentation

A <cd:MatchExpression path=""> should be represented by an 'exists(<path>)' followed by an 'at(<path>, ...)'

stcorp/coda,stcorp/coda,stcorp/coda,stcorp/coda,stcorp/coda,stcorp/coda,stcorp/coda