Add separate command for test parallel

Makefile

@@ -41,8 +41,11 @@ migrate: ## Migrate the wagtail bakery site migrations
 	docker compose exec web python manage.py migrate
 
 test: ## Run all wagtail tests or pass in a file with `make test file=wagtail.admin.tests.test_name`
-	docker compose exec -w /code/wagtail web python runtests.py $(file) $(FILE) --parallel
+	docker compose exec -w /code/wagtail web python runtests.py $(file) $(FILE)
 
+test-parallel: ## Same as make test but will run tests in parallel
+	docker compose exec -w /code/wagtail web python runtests.py $(file) $(FILE) --parallel
+
 format-wagtail: ## Format Wagtail repo
 	docker compose exec -w /code/wagtail web make format-server
 	docker compose exec frontend make format-client