docs: Update the-hard-way.md (#1581)
diff --git a/docs/en/latest/tutorials/the-hard-way.md b/docs/en/latest/tutorials/the-hard-way.md
index 07df65a..dfaf4e3 100644
--- a/docs/en/latest/tutorials/the-hard-way.md
+++ b/docs/en/latest/tutorials/the-hard-way.md
@@ -271,7 +271,7 @@
In this config, we defined an access key with the `admin` name under the `apisix.admin_key` section. This key is our API key, will be used to control APISIX later. This key is the default API key for APISIX, and it should be changed in production environments.
-Save this as `config.yaml`, then run `kubectl -n apisix create cm apisix-conf --from-file ./config.yaml` to create configmap. Later we will mount this configmap into APISIX deployment.
+Save this as `config.yaml`, then run `kubectl -n apisix create -f config.yaml` to create configmap. Later we will mount this configmap into APISIX deployment.
```yaml
apiVersion: apps/v1
