docs(README.md): improve README.md header #1620

	# This workflow will build a Java project with Gradle

	name: Build and unit test

	on: [ push ]

	jobs:
	build:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- uses: actions/setup-java@v4
	with:
	java-version: '21'
	distribution: 'adopt'
	- name: Cache Gradle packages
	uses: actions/cache@v4
	with:
	path: ~/.gradle/caches
	key: ${{ runner.os }}-gradle-${{ hashFiles('*/.gradle') }}
	restore-keys: ${{ runner.os }}-gradle
	- name: Grant execute permission for gradlew
	run: chmod +x gradlew
	- name: Assemble
	run: ./gradlew assemble
	- name: Upload APKs
	uses: actions/upload-artifact@v4
	with:
	name: apks
	path: \|
	demos/*/build/outputs/apk/debug/.apk

	unit-tests:
	needs: build
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- uses: actions/setup-java@v4
	with:
	java-version: '21'
	distribution: 'adopt'
	- name: Cache Gradle packages
	uses: actions/cache@v4
	with:
	path: ~/.gradle/caches
	key: ${{ runner.os }}-gradle-${{ hashFiles('*/.gradle') }}
	restore-keys: ${{ runner.os }}-gradle
	- name: Make gradlew executable
	working-directory: .
	run: chmod +x ./gradlew
	- name: Run unit tests
	working-directory: .
	run: ./gradlew test
	- name: Upload test reports
	uses: actions/upload-artifact@v4
	with:
	name: test-reports
	path: '**/build/reports/tests'

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