Fix typo: "than" -> "then".
Fix typo: "than" -> "then".

StridersGonnaStride/impress.js2,StridersGonnaStride/impress.js2,henrikingo/impress.js,matthewSorensen/himpress,arkegeomatica/presentaciones,henrikingo/impress.js,RonFIX/internet,schalkneethling/mozsa-jhb-opening,impress/impress.js,RonFIX/internet,StridersGonnaStride/myimpress,StridersGonnaStride/myimpress,KathyReid/osdc-2015-presentation,iblancasa/BackendSI2-IV-slides,arkegeomatica/presentaciones,dulichan/kart-slide,j2lb/Algo_Impress.js,j2lb/Algo_Impress.js,dulichan/kart-slide,impress/impress.js,KathyReid/osdc-2015-presentation