fix imports

Author: andreroggeri

src/lib/progress-spinner/progress-spinner.spec.ts

@@ -1,7 +1,7 @@
 import {TestBed, async} from '@angular/core/testing';
 import {Component} from '@angular/core';
 import {By} from '@angular/platform-browser';
-import {MatProgressSpinner, MatProgressSpinnerModule} from './index';
+import {MatProgressSpinnerModule, MatProgressSpinner} from './index';
 
 describe('MatProgressSpinner', () => {