[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

リンクされている PerformanceCodelab を開き、ステップ 4「Analyze performance with system tracing」を、現在の Perfetto のキーボード動作と併せて確認します。W/S がズーム、A/D が左右への移動に使われることが説明されるようにキーの説明を更新し、その後、codelab の文言が現在のコントロールと一致していることを確認します。

索引モデルが issue の本文から書いたものです。