Fix subscribe function typescript definition

Author: jon-moreira

index.d.ts

@@ -11,5 +11,5 @@ declare module 'react-native-zip-archive' {
   export function unzip(source: string, target: string, charset?: string): Promise<string>;
   export function unzipWithPassword(assetPath: string, target: string, passowrd: string): Promise<string>;
   export function unzipAssets(assetPath: string, target: string): Promise<string>;
-  export function subscribe(callback: ({ progress: number, filePath: string })): NativeEventSubscription;
+  export function subscribe(callback: ({ progress: number, filePath: string }) => void): NativeEventSubscription;
 }