Update Starboard media header description #12040

Job	Run time
raspi-2 / initialize	45s
raspi-2-skia / initialize	45s
raspi-2 / docker-build-image	1m 29s
raspi-2 / docker-unittest-image	0s
raspi-2-skia / docker-build-image	1m 27s
raspi-2-skia / docker-unittest-image	0s
raspi-2 / raspi_devel	8m 53s
raspi-2 / raspi_debug	14m 38s
raspi-2 / raspi_qa	7m 59s
raspi-2 / raspi_gold	7m 42s
raspi-2 / sbversion-15_devel	9m 13s
raspi-2 / sbversion-15_debug	12m 25s
raspi-2 / sbversion-15_qa	8m 8s
raspi-2 / sbversion-15_gold	8m 20s
raspi-2 / sbversion-16_devel	9m 5s
raspi-2 / sbversion-16_debug	13m 34s
raspi-2 / sbversion-16_qa	8m 42s
raspi-2 / sbversion-16_gold	7m 40s
raspi-2-skia / raspi-2-skia_devel	8m 57s
raspi-2-skia / raspi-2-skia_debug	12m 54s
raspi-2-skia / raspi-2-skia_qa	7m 49s
raspi-2-skia / raspi-2-skia_gold	7m 41s
raspi-2-skia / ${{ matrix.name }}_${{ matrix.shard }}_test	0s
raspi-2-skia / ${{ matrix.name }}_on_device_${{ matrix.shard }}	0s
raspi-2 / ${{ matrix.name }}_${{ matrix.shard }}_test	0s
raspi-2 / ${{ matrix.name }}_on_device_${{ matrix.shard }}	0s
	2h 38m 6s

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