DOC Remove simple theme reference from PHPDoc comment #3793

Job	Run time
CI / Context	1s
CI / Generate matrix	19s
CI / 8.3 prf-low mariadb phpunit framework-core	5m 56s
CI / Check governance	0s
CI / 8.3 mysql80 phpunit framework-core	8m 24s
CI / 8.4 mysql84 phpunit framework-core	7m 50s
CI / 8.3 prf-low mariadb phpunit framework-orm	11m 48s
CI / 8.3 mysql80 phpunit framework-orm	13m 30s
CI / 8.4 mysql84 phpunit framework-orm	13m 29s
CI / 8.3 mysql80 phplinting	2m 37s
CI / 8.3 mysql80 phpunit framework-cache-only inmemorycache	1m 57s
CI / Dispatch tag patch release	0s
	1h 5m 51s

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