fix(code-style): remove space before comma

Author: Victor

example/app/stock-inventory/containers/stock-inventory/stock-inventory.component.ts

@@ -3,7 +3,7 @@ import { FormBuilder, FormGroup, FormArray, Validators, AbstractControl } from '
 
 import { StockValidators } from './stock-inventory.validators';
 
-import { Observable , forkJoin } from 'rxjs';
+import { Observable, forkJoin } from 'rxjs';
 import { map } from 'rxjs/operators';
 
 import { StockInventoryService } from '../../services/stock-inventory.service';

src/ngxerror.directive.ts

@@ -1,6 +1,6 @@
 import { Directive, Input, OnInit, OnDestroy, DoCheck, Inject, HostBinding, forwardRef } from '@angular/core';
 
-import { Observable ,  Subject ,  Subscription, combineLatest } from 'rxjs';
+import { Observable,  Subject,  Subscription, combineLatest } from 'rxjs';
 
 import { distinctUntilChanged, filter, map } from 'rxjs/operators';