Fix test description

test/promisify.test.js

@@ -12,11 +12,11 @@ test('Runs the function provided', () => {
   const delay = promisify((d, cb) => setTimeout(cb, d));
   return delay(200).then(() => expect(true).toBeTruthy());
 });
-test('Resolve a callback result', () => {
+test('Resolves a callback result', () => {
   const resolve1 = promisify(cb => cb(null, 1));
   return expect(resolve1()).resolves.toBe(1);
 });
-test('Reject on error', () => {
+test('Rejects on error', () => {
   const reject = promisify(cb => cb('error', null));
   return expect(reject()).rejects.toMatch('error');
 });