corrected db name variable

openproject/openproject-secret.json

@@ -1,6 +1,6 @@
 {
     "openprojectpostgres": {
-        "POSTGRES_DB": "#DB_POSTGRES",
+        "POSTGRES_DB": "#DB_NAME",
         "POSTGRES_USER": "#DB_USER",
         "POSTGRES_PASSWORD": "#DB_PASSWORD",
         "POSTGRES_ROOT_PASSWORD": "#DB_ROOT_PASSWORD"

openproject/template.json

@@ -3,7 +3,7 @@
     "fields": [
         {
             "description": "Postgres database name",
-            "key": "DB_POSTGRES",
+            "key": "DB_NAME",
             "value": "",
             "required": "true",
             "generated": "time|md5|8"