docs: fix typo `installed` -> `install` #1327

Job	Run time
pack	1m 14s
test (ubuntu-latest, npm, true)	3m 11s
test (ubuntu-latest, npm, false)	2m 56s
test (ubuntu-latest, pnpm, true)	2m 6s
test (ubuntu-latest, pnpm, false)	2m 9s
test (windows-latest, npm, true)	8m 1s
test (windows-latest, npm, false)	8m 47s
test (windows-latest, pnpm, true)	4m 28s
test (windows-latest, pnpm, false)	5m 58s
	38m 50s

Provide feedback