[docs] Change `annotation` to `attribute` (#1803) #1722

Job	Run time
PHPUnit (7.4, highest, stable, false)	28s
PHPUnit (8.0, highest, stable, false)	29s
PHPUnit (8.1, highest, stable, false)	30s
PHPUnit (8.2, highest, stable, false)	25s
PHPUnit (lowest, stable, 7.4)	57s
PHPUnit (5.4.*, highest, 8.0)	28s
PHPUnit (6.*, highest, 8.3)	22s
PHPUnit (8.3, highest, stable, true)	19s
PHPUnit (8.3, highest, dev, true)	29s
PHPUnit (8.3, highest, dev)	28s
Upload coverage to Codecov	9s
	5m 4s

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