Merged PR 4340: fix booking_detail model

# Description

Fix `booking_detail` model

# Checklist

- [x] The edited models and dependants run properly with production data.
- [ ] The edited models are sufficiently documented.
- [ ] The edited models contain PK tests, and I've ran and passed them.
- [ ] I have checked for DRY opportunities with other models and docs.
- [ ] I've picked the right materialization for the affected models.

# Other

- [ ] Check if a full-refresh is required after this PR is merged.

fix booking_detail model

models/intermediate/core/int_core__booking_details.sql

@@ -73,7 +73,7 @@ select
     uh.company_name,
     b.guest_first_name,
     b.guest_last_name,
-    uu.guest_email,
+    uu.email as guest_email,
     uu.billing_country_name as guest_billing_country,
     uu.billing_town as guest_billing_town,
     a.friendly_name,