Makefile: fix DOX invocation
Makefile: fix DOX invocation

mralexgray/NodObjC,telerik/NodObjC,jerson/NodObjC,mralexgray/NodObjC,jerson/NodObjC,TooTallNate/NodObjC,jerson/NodObjC,telerik/NodObjC,TooTallNate/NodObjC