test(query-builder): adjust spacing for consistent formatting

Author: georgianastasov

projects/igniteui-angular/src/lib/grids/grid/grid-filtering-advanced.spec.ts

@@ -3161,6 +3161,7 @@ describe('IgxGrid - Advanced Filtering #grid - ', () => {
             tree.filteringOperands.push({
                 fieldName: 'ProductName', searchVal: 'a', condition: IgxStringFilteringOperand.instance().condition('contains')
             });
+            
             grid.advancedFilteringExpressionsTree = tree;
             fix.detectChanges();