Re-add line breaks to yum repo code block..

See commit af2fe96 comment..
diff --git a/content/download/index.html b/content/download/index.html
index 671a3d3..175b4c1 100644
--- a/content/download/index.html
+++ b/content/download/index.html
@@ -190,12 +190,12 @@
   <li>Add the Apache repository of Cassandra to <code class="highlighter-rouge">/etc/yum.repos.d/cassandra.repo</code>, for example for the latest 3.11 version:</li>
 </ul>
 
-<div class="language-text highlighter-rouge"><pre class="highlight"><code>[cassandra]
-name=Apache Cassandra
-baseurl=https://www.apache.org/dist/cassandra/redhat/311x/
-gpgcheck=1
-repo_gpgcheck=1
-gpgkey=https://www.apache.org/dist/cassandra/KEYS
+<div class="language-text highlighter-rouge"><pre class="highlight"><code>[cassandra]<br />
+name=Apache Cassandra<br />
+baseurl=https://www.apache.org/dist/cassandra/redhat/311x/<br />
+gpgcheck=1<br />
+repo_gpgcheck=1<br />
+gpgkey=https://www.apache.org/dist/cassandra/KEYS<br />
 </code></pre>
 </div>