replace cpu-percent with cpu

Flag --cpu-percent has been deprecated, Use --cpu with percentage or resource quantity format (e.g., '70%' for utilization or '500m' for milliCPU).

Author: AA-furkan

content/en/docs/tasks/run-application/horizontal-pod-autoscale-walkthrough.md

@@ -100,7 +100,7 @@ on the algorithm.
 Create the HorizontalPodAutoscaler:
 
 ```shell
-kubectl autoscale deployment php-apache --cpu-percent=50 --min=1 --max=10
+kubectl autoscale deployment php-apache --cpu=50% --min=1 --max=10
 ```
 
 ```