Updated website docs and /twenty-server/.env (#8801)

Fix for the issue Incorrect Database Connection String in .env File
#8741

---------

Co-authored-by: Félix Malfait <felix@twenty.com>

packages/twenty-docker/k8s/manifests/deployment-db.yaml

@@ -33,7 +33,7 @@ spec:
             - name: PGUSER_SUPERUSER
               value: "postgres"
             - name: PGPASSWORD_SUPERUSER
-              value: "twenty"
+              value: "postgres"
           ports:
             - containerPort: 5432
               name: tcp

packages/twenty-docker/k8s/manifests/deployment-server.yaml

@@ -40,7 +40,7 @@ spec:
             - name: FRONT_BASE_URL
               value: "https://crm.example.com:443"
             - name: "PG_DATABASE_URL"
-              value: "postgres://postgres:twenty@twenty-db.twentycrm.svc.cluster.local/default"
+              value: "postgres://postgres:postgres@twenty-db.twentycrm.svc.cluster.local/default"
             - name: "REDIS_URL"
               value: "redis://twentycrm-redis.twentycrm.svc.cluster.local:6379"
             - name: ENABLE_DB_MIGRATIONS

packages/twenty-docker/k8s/manifests/deployment-worker.yaml

@@ -31,7 +31,7 @@ spec:
             - name: FRONT_BASE_URL
               value: "https://crm.example.com:443"
             - name: PG_DATABASE_URL
-              value: "postgres://postgres:twenty@twenty-db.twentycrm.svc.cluster.local/default"
+              value: "postgres://postgres:postgres@twenty-db.twentycrm.svc.cluster.local/default"
             - name: ENABLE_DB_MIGRATIONS
               value: "false" # it already runs on the server
             - name: STORAGE_TYPE