chore: remove repetitive words (#999)

Author: yudrywet

tests/integration/node.test.js

@@ -1,7 +1,7 @@
 // eslint-disable-next-line import/no-unresolved
 import format from '../../dist/test.cjs';
 
-test('Should run a a test app in a node environment', async () => {
+test('Should run a test app in a node environment', async () => {
   const data = 'contract    CheckPackage {}';
 
   expect(await format(data)).toEqual('contract CheckPackage {}\n');

tests/integration/sandbox.test.js

@@ -1,4 +1,4 @@
-test('Should run a a test app in a sandbox', async () => {
+test('Should run a test app in a sandbox', async () => {
   const data = 'contract    CheckPackage {}';
   const entry = new URL('./sandbox-test-app.cjs', import.meta.url);