Undo incorrect "propertyNames" change

But leave the other minor formatting improvements

Author: handrews

hyper-schema.json

@@ -47,10 +47,7 @@
         "oneOf": { "$ref": "#/definitions/schemaArray" },
         "not": { "$ref": "#" },
         "contains": { "$ref": "#" },
-        "propertyNames": {
-            "type": "object",
-            "additionalProperties": { "$ref": "#" }
-        },
+        "propertyNames": { "$ref": "#" },
         "base": {
             "type": "string",
             "format": "uri-template"

schema.json

@@ -134,10 +134,7 @@
                 ]
             }
         },
-        "propertyNames": {
-            "type": "object",
-            "additionalProperties": { "$ref": "#" }
-        },
+        "propertyNames": { "$ref": "#" },
         "const": true,
         "enum": {
             "type": "array",