Use STAA not STP

examples/C/src/decentralized-coordination/MonteCarloPi.lf

@@ -60,7 +60,7 @@ reactor Gather(parallelism: int = 4, desired_precision: double = 0.000001) {
     // Note: Even if we are requesting stopping, we need to execute at the stop tag because
     // we are using a dataflow style and the downstream reactor will block until they receive our data.
     lf_schedule(a, 0);
-  =} STP(100 days) {=
+  =} STAA(100 days) {=
     tag_t now = lf_tag();
     lf_print_error("STP violation at Gather at tag " PRINTF_TAG, now.time - lf_time_start(), now.microstep);
   =}