feat: moved parent type into rules

Author: raphael-goetz

definitions/rest/data_type/array.md

@@ -12,10 +12,12 @@
     {
       "contains_type": {
         "type": "HTTP_HEADER_ENTRY"
+      },
+      "parent_type": {
+        "data_type_identifier": "ARRAY"
       }
     }
   ],
-  "parent_type_identifier": "ARRAY",
   "generic_keys": []
 }
 ```

definitions/standard/data_type/array.md

@@ -20,7 +20,6 @@
       }
     }
   ],
-  "generic_keys": ["T"],
-  "parent_type_identifier": null
+  "generic_keys": ["T"]
 }
 ```

definitions/standard/data_type/node.md

@@ -89,7 +89,6 @@
       "content": "Transform"
     }
   ]
-
 }
 ```