refactor(typescript-guide): improve grammar and set right command #7138

Job	Run time
Proselint (ubuntu-latest, lts/*)	37s
Lint (ubuntu-latest, lts/*)	1m 11s
Unit Test (ubuntu-latest, lts/*)	43s
E2E test and link check (ubuntu-latest, lts/*)	8m 0s
	10m 31s

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