tools/rtla: Fix -A option name in test comment

This was changed to --on-threshold when the patches were applied.

Cc: John Kacur <[email protected]>
Cc: Costa Shulyupin <[email protected]>
Link: https://lore.kernel.org/[email protected]
Reviewed-by: Tomas Glozar  <[email protected]>
Signed-off-by: Crystal Wood <[email protected]>
Signed-off-by: Steven Rostedt (Google) <[email protected]>

Author: crwood-rh

tools/tracing/rtla/tests/timerlat.t

@@ -47,9 +47,9 @@ check "trace output through -t" \
 	"timerlat hist -T 2 -t" 2 "^  Saving trace to timerlat_trace.txt$"
 check "trace output through -t with custom filename" \
 	"timerlat hist -T 2 -t custom_filename.txt" 2 "^  Saving trace to custom_filename.txt$"
-check "trace output through -A trace" \
+check "trace output through --on-threshold trace" \
 	"timerlat hist -T 2 --on-threshold trace" 2 "^  Saving trace to timerlat_trace.txt$"
-check "trace output through -A trace with custom filename" \
+check "trace output through --on-threshold trace with custom filename" \
 	"timerlat hist -T 2 --on-threshold trace,file=custom_filename.txt" 2 "^  Saving trace to custom_filename.txt$"
 check "exec command" \
 	"timerlat hist -T 2 --on-threshold shell,command='echo TestOutput'" 2 "^TestOutput$"