Fix double quotes in Literal type hint #327

Job	Run time
Test pre-commit console encoding	43s
Test Python 3.8 (ubuntu-latest)	1m 5s
Test Python 3.9 (ubuntu-latest)	1m 1s
Test Python 3.10 (ubuntu-latest)	1m 6s
Test Python 3.11 (ubuntu-latest)	1m 9s
Test Python 3.12 (ubuntu-latest)	20s
Test Python 3.8 (windows-latest)	2m 14s
Test Python 3.9 (windows-latest)	2m 11s
Test Python 3.10 (windows-latest)	2m 23s
Test Python 3.11 (windows-latest)	2m 37s
Test Python 3.12 (windows-latest)	1m 3s
Test Python 3.8 (macOS-latest)	1m 32s
Test Python 3.9 (macOS-latest)	1m 30s
Test Python 3.10 (macOS-latest)	1m 27s
Test Python 3.11 (macOS-latest)	1m 27s
Test Python 3.12 (macOS-latest)	2m 14s
	24m 2s

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