fix typo

Co-authored-by: Ryan Cartwright <[email protected]>

src/pages/concepts/infrastructure-from-code.mdx

@@ -41,7 +41,7 @@ import { GetObjectCommand, S3Client } from '@aws-sdk/client-s3'
 const client = new S3Client({})
 const PROFILES_BUCKET = process.env.PROFILES_BUCKET
 
-if (!bucket) {
+if (!PROFILES_BUCKET) {
   throw new Error('PROFILES_BUCKET environment variable not set')
 }