Cherry pick PR #1855: Edit headings of the codelabs, contributors, and development cobalt/site/docs files for DevSite migration #1309

Job	Run time
android-arm64 / initialize	1m 26s
android-x86 / initialize	33s
android-arm / initialize	1m 13s
android-x86 / docker-build-image	26s
android-x86 / docker-unittest-image	0s
android-arm / docker-build-image	34s
android-arm / docker-unittest-image	0s
android-x86 / x86_devel	17m 14s
android-x86 / x86_debug	17m 56s
android-x86 / x86_qa	7m 32s
android-x86 / x86_gold	6m 58s
android-arm64 / docker-build-image	32s
android-arm64 / docker-unittest-image	0s
android-arm / arm_devel	28m 48s
android-arm / arm_debug	19m 1s
android-arm / arm_qa	7m 11s
android-arm / arm_gold	7m 37s
android-arm64 / arm64_devel	24m 52s
android-arm64 / arm64_debug	16m 59s
android-arm64 / arm64_qa	7m 34s
android-arm64 / arm64_gold	7m 9s
android-x86 / ${{ matrix.name }}_${{ matrix.shard }}_test	0s
android-x86 / ${{ matrix.name }}_on_device_${{ matrix.shard }}	0s
android-x86 / on-host-unit-test-report	0s
android-arm64 / ${{ matrix.name }}_${{ matrix.shard }}_test	0s
android-arm64 / ${{ matrix.name }}_on_device_${{ matrix.shard }}	0s
android-arm64 / on-host-unit-test-report	0s
android-arm / ${{ matrix.name }}_${{ matrix.shard }}_test	0s
android-arm / ${{ matrix.name }}_on_device_${{ matrix.shard }}	0s
android-arm / on-host-unit-test-report	0s
	2h 53m 35s

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