Fix RST indent for Document annotation writeConcern option #1265

Job	Run time
PHPUnit (8.1, 7.0, stable, server, highest, stable)	1m 3s
PHPUnit (8.1, 6.0, stable, server, highest, stable)	1m 24s
PHPUnit (8.1, 5.0, stable, server, highest, stable)	53s
PHPUnit (8.1, 4.4, stable, server, highest, stable)	1m 1s
PHPUnit (8.2, 7.0, stable, server, highest, stable)	1m 2s
PHPUnit (8.2, 6.0, stable, server, highest, stable)	58s
PHPUnit (8.2, 5.0, stable, server, highest, stable)	1m 12s
PHPUnit (8.2, 4.4, stable, server, highest, stable)	56s
PHPUnit (8.3, 7.0, stable, server, highest, stable)	54s
PHPUnit (8.3, 6.0, stable, server, highest, stable)	1m 7s
PHPUnit (8.3, 5.0, stable, server, highest, stable)	1m 2s
PHPUnit (8.3, 4.4, stable, server, highest, stable)	51s
PHPUnit (lowest, 8.1, 4.4, 1.11.0, server, stable)	1m 57s
PHPUnit (server, 8.2, 7.0, stable, highest, 7)	55s
PHPUnit (replica_set, 8.2, 4.4, stable, highest, stable)	1m 5s
PHPUnit (sharded_cluster, 8.2, 4.4, stable, highest, stable)	1m 40s
	18m 0s

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