Docs: Fix CLI Login hyperlink for various doc pages

[PLyn]

I have read the CONTRIBUTING.md file.

YES

What kind of change does this PR introduce?

Update link for hyperlink that was leading to 404 errors

What is the current behavior?

404 page not found errors for Log in hyperlinks for various doc pages

Please link any relevant issues here.

What is the new behavior?

Now correctly links to the CLI log in docs page

Additional context

[vercel]

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Name	Status	Preview	Comments	Updated (UTC)
docs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	May 18, 2024 11:05pm

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[supabase]

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[notion-workspace]

Update Vanity Subdomains link URL for logging in to CLI