fix ventilation for sidewalls

rack/print/rackFeet_P.scad

@@ -1,4 +1,4 @@
 use <../stackEnds.scad>
 
 
-stackConnectorFeet();
+rackFeet();

rack/print/rackJoiner_P.scad

@@ -2,4 +2,4 @@ include <../stackEnds.scad>
 
 // Oriented for 3d printing. No supports required, but it's reccommended to print this with a brim.
 // Adding a brim will require some post-processing in the form of trimming the bottom.
-stackConnectorDual();
+rackJoiner();