Merge pull request #29073 from able8/fix-a-code-block-format-in-expose-intro.html

Fix a code block format in expose-intro.html

Author: k8s-ci-robot

content/en/docs/tutorials/kubernetes-basics/expose/expose-intro.html

@@ -37,7 +37,7 @@ <h3>Overview of Kubernetes Services</h3>
 				<li><i>ClusterIP</i> (default) - Exposes the Service on an internal IP in the cluster. This type makes the Service only reachable from within the cluster.</li>
 				<li><i>NodePort</i> - Exposes the Service on the same port of each selected Node in the cluster using NAT. Makes a Service accessible from outside the cluster using <code>&lt;NodeIP&gt;:&lt;NodePort&gt;</code>. Superset of ClusterIP.</li>
 				<li><i>LoadBalancer</i> - Creates an external load balancer in the current cloud (if supported) and assigns a fixed, external IP to the Service. Superset of NodePort.</li>
-				<li><i>ExternalName</i> - Maps the Service to the contents of the <code>externalName</code> field (e.g. `foo.bar.example.com`), by returning a <code>CNAME</code> record with its value. No proxying of any kind is set up. This type requires v1.7 or higher of <code>kube-dns</code>, or CoreDNS version 0.0.8 or higher.</li>
+				<li><i>ExternalName</i> - Maps the Service to the contents of the <code>externalName</code> field (e.g. <code>foo.bar.example.com</code>), by returning a <code>CNAME</code> record with its value. No proxying of any kind is set up. This type requires v1.7 or higher of <code>kube-dns</code>, or CoreDNS version 0.0.8 or higher.</li>
 			</ul>
 			<p>More information about the different types of Services can be found in the <a href="/docs/tutorials/services/source-ip/">Using Source IP</a> tutorial. Also see <a href="/docs/concepts/services-networking/connect-applications-service">Connecting Applications with Services</a>.</p>
 			<p>Additionally, note that there are some use cases with Services that involve not defining <code>selector</code> in the spec. A Service created without <code>selector</code> will also not create the corresponding Endpoints object. This allows users to manually map a Service to specific endpoints. Another possibility why there may be no selector is you are strictly using <code>type: ExternalName</code>.</p>