core: fix setting getAccess

packages/hydrooj/src/settings.ts

@@ -181,7 +181,7 @@ export class SettingService extends Service {
             if (path.some((p) => typeof p === 'symbol')) return currentValue;
             return new Proxy(currentValue, {
                 get(self, key: string) {
-                    return getAccess([...path, ...key]);
+                    return getAccess([...path, key]);
                 },
                 set(self, p: string | symbol, newValue: any) {
                     that.setConfig([...path, p].join(','), newValue);