[pre-commit.ci] auto fixes from pre-commit.com hooks

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Author: pre-commit-ci[bot]

docs/source/jupyterhub/installation.md

@@ -128,7 +128,7 @@ can try with `nano config.yaml`.
    proxy-7cb9bc4cc-9bdlp   1/1       Running   0          37s
    ```
 
-5. Find the IP we can use to access the JupyterHub. Run the following 
+5. Find the IP we can use to access the JupyterHub. Run the following
    command until the `EXTERNAL-IP` of the `proxy-public` [service](https://kubernetes.io/docs/concepts/services-networking/service/)
    is available like in the example output.
 
@@ -140,8 +140,9 @@ can try with `nano config.yaml`.
    NAME           TYPE           CLUSTER-IP     EXTERNAL-IP     PORT(S)        AGE
    proxy-public   LoadBalancer   10.51.248.230   104.196.41.97   80:31916/TCP   1m
    ```
-  
+
    Or, use the short form:
+
    ```
    kubectl -n <k8s-namespace> get svc proxy-public -o jsonpath='{.status.loadBalancer.ingress[].ip}'
    ```