Make wrong example markings more obvious

Author: zoffixznet

doc/Type/atomicint.pod6

@@ -31,12 +31,13 @@ must be used in conjunction with the atomic operations.
     await start { for ^20000 { $total⚛++ } } xx 4;
     say $total;
 
+    # *** WRONG *** due to lack of use of the atomicint type.
     # Either works correctly or dies, depending on platform.
     my int $total = 0;
     await start { for ^20000 { $total⚛++ } } xx 4;
     say $total;
 
-    # Wrong due to lack of use of the atomic increment operator.
+    # *** WRONG *** due to lack of use of the atomic increment operator.
     my atomicint $total = 0;
     await start { for ^20000 { $total++ } } xx 4;
     say $total;