DC-5658 Add Astro OG image (#7176)

* Add OG image

* Optimised images with calibre/image-actions

* Trigger Checks

* Optimised images with calibre/image-actions

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Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Author: aidankmcalister

content/900-ai/prompts/astro.mdx

@@ -3,7 +3,7 @@ title: 'Set up Astro + Prisma + Prisma Postgres'
 metaTitle: 'How to Initialize an Astro App with Prisma ORM and Prisma Postgres'
 description: 'Step-by-step guide for integrating Prisma ORM and Prisma Postgres in an Astro.js project.'
 sidebar_label: 'Astro + Prisma'
-image: '/img/prompts/astro-prisma-cover.png'
+image: '/img/ai/astro-prisma-cover.png'
 ---
 
 ## How to use