fixed unit test

test/unit_tests/registerA_w/test.act

@@ -44,7 +44,7 @@ defproc registerA_w (avMx1of2<8> in; Mx1of2<7> out){
     supply.vdd = Vdd;
     supply.vss = GND;
 
-    registerA<7> b(.in = in, .out = out, .reset_B = _reset_B, .supply = supply);
+    register_acells_improved<7> b(.in = in, .out = out, .reset_B = _reset_B, .supply = supply);
 }