Switched on the @typescript-eslint/no-non-null-assertion rule in eslint.

Fixed the errors it threw up.

overlord/src/app/recipe/recipe.service.ts

@@ -58,7 +58,7 @@ export class RecipeService {
     startDate: string | null,
     finishDate: string | null,
   ): Observable<ProductSku> {
-    const getUrl: string = `${url}/ingredient-details/${id}`;
+    const getUrl = `${url}/ingredient-details/${id}`;
     const options = {
       params: new HttpParams(),
     };