typo correction aws_ecs_benchmarks_cdn_gpu.sh (#3910)

Co-authored-by: Phil <[email protected]>

scripts/benchmark_scripts/aws_ecs_benchmarks_cdn_gpu.sh

@@ -165,4 +165,4 @@ done
 # shut down all related threads
 echo -e "\e[35mGoing to stop cdn-marshal\e[0m"
 killall -9 cdn-marshal
-# for pid in $(ps -ef | grep "keydb-server" | awk '{print $2}'); do sudo kill -9 $pid; done
+# for pid in $(ps -ef | grep "keydb-server" | awk '{print $2}'); do sudo kill -9 $pid; done