OZG-3034 implement code review comments

alfa-client/apps/alfa/src/app/app.component.spec.ts

alfa-client/apps/alfa/src/app/app.component.ts

alfa-client/libs/api-root-shared/src/lib/api-root.linkrel.ts

...libs/resource-redirect-shared/src/lib/resource-linkrel.ts

...urce-redirect-shared/src/lib/resource-redirect-linkrel.ts

...redirect-shared/src/lib/resource-redirect.service.spec.ts

...urce-redirect-shared/src/lib/resource-redirect.service.ts

...lib/resource-redirect/resource-redirect.component.spec.ts

.../src/lib/resource-redirect/resource-redirect.component.ts