fix staticReseed bug

Author: Remi-Gau

subfun/defaults/checkParameters.m

@@ -64,7 +64,7 @@
     fieldsToSet.dot = cppPtbDefaults('dot');
     fieldsToSet.dot.color = fieldsToSet.color.white;
     % Static dots should change position at each event or not
-    fieldsToSet.staticReSeed = true;
+    fieldsToSet.dot.staticReSeed = true;
 
     %% Task(s)