Fixed linting and js-api tests

lib/core/src/lib/pipes/date-time.pipe.spec.ts

@@ -14,6 +14,7 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+
 import { DateTimePipe } from './date-time.pipe';
 import { addMinutes, isValid } from 'date-fns';