add pinterest case study (#9633)

* add pinterest case study

* fix

* fixes

content/en/_index.html

@@ -121,6 +121,15 @@ cid: home
     <main>
         <h3>Case Studies</h3>
         <div id="caseStudiesWrapper">
+          <div>
+              <p>Pinning Its Past, Present, and Future on Cloud Native</p>
+              <a href="/case-studies/pinterest">Read more</a>
+          </div>
+          <div>
+              <p>Reinventing the World’s Largest Education Company With Kubernetes</p>
+              <a href="/case-studies/pearson">Read more</a>
+          </div>
+         
           <div>
               <p>Supporting Fast Decisioning Applications with Kubernetes</p>
               <a href="/case-studies/capital-one">Read more</a>
@@ -129,14 +138,6 @@ cid: home
               <p>Driving Banking Innovation with Cloud Native</p>
               <a href="/case-studies/ing">Read more</a>
           </div>
-          <div>
-              <p>Cloud Native at Northwestern Mutual</p>
-              <a href="/case-studies/northwestern-mutual/">Read more</a>
-          </div>
-          <div>
-              <p>Launching and Scaling Up Experiments, Made Simple</p>
-              <a href="/case-studies/openai/">Read more</a>
-          </div>
         
         </div>