fixed a typo in one of the components

src-ui/src/app/components/search/result-highlight/result-highlight.component.spec.ts

@@ -0,0 +1,25 @@
+import { ComponentFixture, TestBed } from '@angular/core/testing';
+
+import { ResultHighlightComponent } from './result-highlight.component';
+
+describe('ResultHighlightComponent', () => {
+  let component: ResultHighlightComponent;
+  let fixture: ComponentFixture<ResultHighlightComponent>;
+
+  beforeEach(async () => {
+    await TestBed.configureTestingModule({
+      declarations: [ ResultHighlightComponent ]
+    })
+    .compileComponents();
+  });
+
+  beforeEach(() => {
+    fixture = TestBed.createComponent(ResultHighlightComponent);
+    component = fixture.componentInstance;
+    fixture.detectChanges();
+  });
+
+  it('should create', () => {
+    expect(component).toBeTruthy();
+  });
+});