fix(test): use DatabasePath field in config.Config struct literal

internal/api/server_test.go

@@ -34,7 +34,7 @@ func setupTestServer(t *testing.T) (*Server, *storage.Store, string) {
 
 	cfg := &config.Config{
 		Port:              "8080",
-		DBPath:            dbPath,
+		DatabasePath:      dbPath,
 		JWTSecret:         "test-jwt-secret-key",
 		AllowRegistration: true,
 	}