chore: fix S3_BUCKET env name

Author: kimcoder

Diff for: .github/workflows/deploy-storybook.yml

@@ -31,7 +31,7 @@ jobs:
           AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
           AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
           S3_BUCKET: ${{ secrets.S3_BUCKET }}
-        run: aws s3 cp ./example s3://$FIRST_NAME \
+        run: aws s3 cp ./example s3://$S3_BUCKET \
           --acl public-read \
           --recursive \
           --region ap-northeast-2