fix: set "production" as hugo environment in prod

Signed-off-by: David Karlsson <[email protected]>

Author: dvdksn

hack/releaser/env.json

@@ -9,7 +9,7 @@
     "DOCS_LAMBDA_FUNCTION_REDIRECTS": "DockerDocsRedirectFunction-labs"
   },
   "refs/heads/main": {
-    "HUGO_ENV": "prod",
+    "HUGO_ENV": "production",
     "DOCS_URL": "https://docs.docker.com",
     "DOCS_AWS_IAM_ROLE": "arn:aws:iam::710015040892:role/prod-docs-docs.docker.com-20220818202218674300000001",
     "DOCS_AWS_REGION": "us-east-1",