[PerformanceCodelab](Step 4 Analyze performance with system tracing) perfetto keyboard keys description problem

hi, when I was following the codelab [PerformanceCodelab](https://developer.android.com/codelabs/jetpack-compose-performance?continue=https%3A%2F%2Fdeveloper.android.com%2Fcourses%2Fpathways%2Fjetpack-compose-for-android-developers-4%23codelab-https%3A%2F%2Fdeveloper.android.com%2Fcodelabs%2Fjetpack-compose-performance#3) and tried to use perfetto to practise reading the trace file, I found that some of the keyboards keys not worked as mentioned.

1. [wrong] W and A keys for zoom in/out, [right] W and **S** keys for zoom in/out
2.[wrong] S and D for going left and right, [right] **A** and D for going left and right

maybe the perfetto website update the hotkeys ,and hope codelab to be updated

打开链接的 PerformanceCodelab，查看第 4 步“Analyze performance with system tracing”，并结合当前 Perfetto 的键盘行为进行检查。更新按键说明，记录 W/S 用于缩放、A/D 用于向左和向右移动，然后确认 codelab 的措辞与当前控件一致。

由索引模型根据 Issue 内容生成。