Fix spelling errors.

src/app/tes.service.ts

@@ -163,7 +163,7 @@ public setStatusMsg(statusMsg: BehaviorSubject<any>) {
  private getJobsError(error: any) {
    this.joblist.next([]);
    if (error.status == 0) {
-     this.statusMsg.next("A network error occured. Please try again latter");
+     this.statusMsg.next("A network error occurred. Please try again later");
      return
    }
    console.error(error);