Fix server type in getIds call

lib/models/auth/oauth_credentials.dart

@@ -90,8 +90,7 @@ class OAuthCredentials implements ICredentials {
           'Client ID and Client Secret are already set, skipping ID fetching');
       return Result.ok(true);
     }
-    final idEndpoint =
-        Uri.parse('https://friendicadevtest1.myportal.social/api/v1/apps');
+    final idEndpoint = Uri.parse('https://$serverName/api/v1/apps');
     final response = await http.post(idEndpoint, body: {
       'client_name': 'Relatica',
       'redirect_uris': '$redirectUrl',