fix: update blog post page

[jsjoeio]

• refactor: extract copy to variable
• fix: update blog page title
• docs: change copy to use Posts less

Fixes #23

[vercel[bot]]

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Name	Status	Preview	Comments	Updated (UTC)
speak-argentinian-spanish	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	May 2, 2023 2:49am