chore: fix eslint issue

Author: Dobromir Hristov

src/constants/CardSize.js

@@ -1,3 +1,13 @@
+/**
+ * This source file is part of the Swift.org open source project
+ *
+ * Copyright (c) 2022 Apple Inc. and the Swift project authors
+ * Licensed under Apache License v2.0 with Runtime Library Exception
+ *
+ * See https://swift.org/LICENSE.txt for license information
+ * See https://swift.org/CONTRIBUTORS.txt for Swift project authors
+*/
+
 export default {
   small: 'small',
   large: 'large',

tests/unit/components/Card.spec.js

@@ -6,7 +6,7 @@
  *
  * See https://swift.org/LICENSE.txt for license information
  * See https://swift.org/CONTRIBUTORS.txt for Swift project authors
- */
+*/
 
 import { shallowMount } from '@vue/test-utils';
 import Card from 'docc-render/components/Card.vue';
@@ -24,11 +24,6 @@ describe('Card', () => {
     identifier: 'identifier',
   };
 
-  const abstract = [{
-    type: 'text',
-    text: 'Abstract',
-  }];
-
   const references = {
     [image.identifier]: {
       variants: [{ url: 'image.com', traits: ['1x'] }],