chore: fix demo github project title

Author: ghiscoding

src/app/app.component.spec.ts

@@ -20,9 +20,9 @@ describe('AppComponent', () => {
     expect(app).toBeTruthy();
   });
 
-  it(`should have as title 'Angular SlickGrid Demo'`, async () => {
+  it(`should have as title 'Angular-SlickGrid'`, async () => {
     const fixture = TestBed.createComponent(AppComponent);
     const app = fixture.debugElement.componentInstance;
-    expect(app.title).toEqual('Angular SlickGrid Demo');
+    expect(app.title).toEqual('Angular-SlickGrid');
   });
 });