fix: clearifying comment

Author: AlonKellner-Jounce

src/guidellm/scheduler/scheduler.py

@@ -377,6 +377,10 @@ def _add_requests(
                     and added_count < settings.max_add_requests_per_loop
                 ):
                     if run_info.created_requests >= run_info.end_number:
+                        # When `--max-seconds` is set and the dataset is finite -
+                        # almost always the benchmark will end slightly before the
+                        # actual `end_time`.
+                        # Since the units are seconds, rounding 1s is reasonable.
                         if time.time() >= run_info.end_time - 1:
                             run_info.termination_reason = "max_seconds_reached"
                         else: