fix miss_hit suggestion, hopefully it will work this time

Author: marcobarilari

subfun/expDesign.m

@@ -66,7 +66,7 @@
     maxNumFixTargPerBlock = cfg.target.maxNbPerBlock;
 
     if mod(numEventsPerBlock, length(motionDirections)) ~= 0
-        warning('the n. of events per block is not a multiple of the n. of experimental conditions');
+        warning('the n. of events per block is not a multiple of experimental conditions');
     end
 
     %% Adapt some variables according to input