add il-central-1 to supported public regions

Author: Blargian

docs/cloud/reference/05_supported-regions.md

@@ -25,6 +25,7 @@ import EnterprisePlanFeatureBadge from '@theme/badges/EnterprisePlanFeatureBadge
 - us-east-1 (N. Virginia)
 - us-east-2 (Ohio)
 - us-west-2 (Oregon)
+- il-central-1 (Israel)
 
 **Private Region:**
 - ca-central-1 (Canada)