favor using latest when documenting npx commands

[thescientist13]

Related Issue

N / A

Summary of Changes

To avoid any caching issues or confusion for users, making it explicit with npx commands to reference @latest npm alias

# before
npx @greenwood/init

# after
npx @greenwood/init@latest

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edit: found this Reddit thread where other user's are reporting similar situations in needed to use @latest, and that this helps avoid caching issues, which appears to be the default behavior of npx (now?)

If any requested packages are not present in the local project dependencies, then they are installed to a folder in the npm cache