SPDX (#370)

packages/ui-assets/src/types.d.ts

@@ -1,6 +1,5 @@
 // Copyright 2017-2020 @polkadot/ui-assets authors & contributors
-// This software may be modified and distributed under the terms
-// of the Apache-2.0 license. See the LICENSE file for details.
+// SPDX-License-Identifier: Apache-2.0
 
 declare module '*.svg' {
   // eslint-disable-next-line @typescript-eslint/no-explicit-any