Minor (docs): Update how-to-use-the-playground.md document #2816

	name: Automatically cherry-pick merged PR to different branches

	on:
	pull_request_target:
	branches:
	- main
	types: ["closed"]

	jobs:
	cherry_pick_branch_0_5:
	runs-on: ubuntu-latest
	name: Cherry pick into branch_0.5
	if: ${{ contains(github.event.pull_request.labels.*.name, 'branch-0.5') && github.event.pull_request.merged == true }}
	steps:
	- name: Checkout
	uses: actions/checkout@v2
	with:
	fetch-depth: 0
	- name: Cherry pick into branch-0.5
	uses: carloscastrojumo/github-cherry-pick-action@v1.0.9
	with:
	branch: branch-0.5
	labels: \|
	cherry-pick
	reviewers: \|
	jerryshao

	cherry_pick_branch_0_6:
	runs-on: ubuntu-latest
	name: Cherry pick into branch_0.6
	if: ${{ contains(github.event.pull_request.labels.*.name, 'branch-0.6') && github.event.pull_request.merged == true }}
	steps:
	- name: Checkout
	uses: actions/checkout@v2
	with:
	fetch-depth: 0
	- name: Cherry pick into branch-0.6
	uses: carloscastrojumo/github-cherry-pick-action@v1.0.9
	with:
	branch: branch-0.6
	labels: \|
	cherry-pick
	reviewers: \|
	jerryshao


	cherry_pick_branch_0_7:
	runs-on: ubuntu-latest
	name: Cherry pick into branch_0.7
	if: ${{ contains(github.event.pull_request.labels.*.name, 'branch-0.7') && github.event.pull_request.merged == true }}
	steps:
	- name: Checkout
	uses: actions/checkout@v2
	with:
	fetch-depth: 0
	- name: Cherry pick into branch-0.7
	uses: carloscastrojumo/github-cherry-pick-action@v1.0.9
	with:
	branch: branch-0.7
	labels: \|
	cherry-pick
	reviewers: \|
	jerryshao

	env:
	GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

Provide feedback