Docs: Fix return_value() inline documentation #266

Job	Run time
code-quality / PHPStan	22s
code-quality / Spell check	7s
code-quality / PHPCS	18s
code-quality / Lint PHP files	20s
code-quality / Lint Gherkin Feature files	15s
code-quality / Lint GitHub Actions workflows	7s
	1m 29s

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