chore: add Coral Docs to showcase (#3827)

Author: ElianCodes

docs/src/assets/showcase/docs.getcoral.dev.png

@@ -227,6 +227,11 @@ import FluidGrid from './fluid-grid.astro';
 		href="https://astro-snapshot.johng.io"
 		thumbnail="astro-snapshot.johng.io.png"
 	/>
+	<Card
+		title="Coral Docs"
+		href="https://docs.getcoral.dev/"
+		thumbnail="docs.getcoral.dev.png"
+	/>    
 	<Card
 		title="Pulseahead Docs"
 		href="https://www.pulseahead.com/docs"