fix: doctype with entities handling #38

Job	Run time
build (12.x, ubuntu-latest, bash)	26s
build (12.x, macos-latest, bash)	5s
build (12.x, windows-latest, bash)	55s
build (12.x, windows-latest, powershell)	55s
build (14.x, ubuntu-latest, bash)	25s
build (14.x, macos-latest, bash)	7s
build (14.x, windows-latest, bash)	1m 1s
build (14.x, windows-latest, powershell)	1m 1s
build (16.x, ubuntu-latest, bash)	22s
build (16.x, macos-latest, bash)	26s
build (16.x, windows-latest, bash)	27s
build (16.x, windows-latest, powershell)	22s
build (17.x, ubuntu-latest, bash)	27s
build (17.x, macos-latest, bash)	21s
build (17.x, windows-latest, bash)	49s
build (17.x, windows-latest, powershell)	23s
	8m 32s

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