fix v1a3 ResourceSliceList metadata field name

This field was incorrectly named "listMeta" and was missed in review.

api/openapi-spec/swagger.json

@@ -16048,7 +16048,7 @@
           "description": "Kind is a string value representing the REST resource this object represents. Servers may infer this from the endpoint the client submits requests to. Cannot be updated. In CamelCase. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds",
           "type": "string"
         },
-        "listMeta": {
+        "metadata": {
           "$ref": "#/definitions/io.k8s.apimachinery.pkg.apis.meta.v1.ListMeta",
           "description": "Standard list metadata"
         }

api/openapi-spec/v3/apis__resource.k8s.io__v1alpha3_openapi.json

@@ -1152,7 +1152,7 @@
             "description": "Kind is a string value representing the REST resource this object represents. Servers may infer this from the endpoint the client submits requests to. Cannot be updated. In CamelCase. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds",
             "type": "string"
           },
-          "listMeta": {
+          "metadata": {
             "allOf": [
               {
                 "$ref": "#/components/schemas/io.k8s.apimachinery.pkg.apis.meta.v1.ListMeta"