fix(jest): import path in types test

Author: m-radzikowski

packages/aws-sdk-client-mock-jest/test-d/types.ts

@@ -2,7 +2,7 @@ import { PublishCommand, SNSClient } from '@aws-sdk/client-sns';
 import { expect as globalsExpect } from '@jest/globals';
 import { mockClient } from 'aws-sdk-client-mock';
 import { expectError } from 'tsd';
-import '../src';
+import '../src/jest';
 
 expect(1).toHaveReceivedCommand(PublishCommand);