Update ROCKS to rocks (#13904)

templates/containers/chiselled/index.html

@@ -50,6 +50,7 @@ <h2>Ultra-small, ultra-secure containerisation</h2>
           <a href="/containers/contact-us" class="js-invoke-modal">Get support for chiselled
             containers&nbsp;&rsaquo;</a>
         </li>
+      </ul>
     </div>
   </div>
 </section>
@@ -68,7 +69,7 @@ <h2>Ultra-small, ultra-secure containerisation</h2>
     <hr class="p-rule" />
     <div class="col">
       <h2 class="p-text--small-caps u-no-margin--bottom">How to reduce container image size</h2>
-      <h3 class="p-heading--2">Chisel trims up to 80% of your containers’ attack surface.</h3>
+      <h3 class="p-heading--2">Chisel trims up to 80% of your containers' attack surface.</h3>
     </div>
     <div class="col">
       <div class="u-embedded-media ">
@@ -77,7 +78,7 @@ <h3 class="p-heading--2">Chisel trims up to 80% of your containers’ attack sur
           allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share"
           allowfullscreen></iframe>
       </div>
-      <hr class="p-rule">
+      <hr class="p-rule" />
       <p>Mark Lewis, VP Application Services at Canonical, explains how chisel works.</p>
     </div>
   </div>
@@ -96,7 +97,7 @@ <h2>Why your attack surface matters</h2>
           image increases, so does the potential for vulnerabilities and known security issues.</p>
         <p>According to Sysdig, 87% of container images have high or critical vulnerabilities.</p>
       </div>
-      <hr class="p-rule">
+      <hr class="p-rule" />
       <p>
         <a href="/blog/chiselled-containers-perfect-gift-cloud-applications">Explore the benefits of smaller container
           images&nbsp;&rsaquo;</a>
@@ -374,7 +375,7 @@ <h2>From development to production: making developers' lives easier</h2>
             href="https://hub.docker.com/r/ubuntu/jre">Java</a>
         </li>
       </ul>
-      <hr class="p-rule">
+      <hr class="p-rule" />
       <p>
         <a href="https://canonical-oci.readthedocs-hosted.com/en/latest/oci-how-to/create-chiselled-ubuntu-image/">Get
           started today&nbsp;&rsaquo;</a>
@@ -399,7 +400,7 @@ <h2>Vendor supported<br /> distroless images</h2>
         </li>
         <li class="p-list__item has-bullet">24/7 phone and ticket customer support</li>
       </ul>
-      <hr class="p-rule">
+      <hr class="p-rule" />
       <p><a href="/security/docker-images">Read more about our support commitments&nbsp;&rsaquo;</a></p>
     </div>
   </div>
@@ -439,7 +440,7 @@ <h3 class="p-text--small-caps">Documentation</h3>
             </li>
             <li class="p-list__item">
               <a href="https://canonical-rockcraft.readthedocs-hosted.com/en/latest/tutorials/chisel/">Install packages
-                slices into a ROCK</a>
+                slices into a rock</a>
             </li>
           </ul>
         </div>