fix: api url

src/app/services/tournament.service.ts

@@ -2,6 +2,7 @@ import { Injectable, inject } from '@angular/core';
 import { HttpClient, HttpHeaders } from '@angular/common/http';
 import { Observable } from 'rxjs';
 import { Tournament, TournamentList, RoundPairings } from '../models/tournament.models';
+import { environment } from '../../environments/environment';
 
 export interface CreateTournamentForm {
   name: string;
@@ -14,7 +15,7 @@ export interface CreateTournamentForm {
 @Injectable({ providedIn: 'root' })
 export class TournamentService {
   private readonly http = inject(HttpClient);
-  private readonly base = '/api/tournament';
+  private readonly base = `${(environment.tournamentServerUrl ?? '').replace(/\/+$/, '')}/api/tournament`;
 
   list(): Observable<TournamentList> {
     return this.http.get<TournamentList>(this.base);