re:Invent fast-follow items (pulumi#13485)

* Update starburst benefit callout, materialize section headers (top only), and Pulumi Insights description in the top nav

* Update layouts/partials/header.html

Co-authored-by: aaronkao <aaronkao@users.noreply.github.com>

* Update content/case-studies/materialize.md

Co-authored-by: aaronkao <aaronkao@users.noreply.github.com>

---------

Co-authored-by: aaronkao <aaronkao@users.noreply.github.com>

Author: shughes26

content/case-studies/materialize.md

@@ -23,9 +23,9 @@ exec_summary: |
 sections:
     - label: Exec Summary
       anchor: executive-summary
-    - label: Database-as-a-Service Infrastructure Challenges
+    - label: Challenges
       anchor: infrastructure-challenges
-    - label: Automated Infrastructure Management with Pulumi
+    - label: Automation with Pulumi
       anchor: automated-infratructure-management
     - label: Benefits of Using Pulumi
       anchor: benefits

content/case-studies/starburst.md

@@ -15,8 +15,8 @@ quote_block:
   quote: |
       "When we did it with Terraform, it took two weeks to do [infrastructure deployments]. Now we do it in about three hours a day. So that's how much of an improvement Pulumi gave us on our deployment time."
   quote_attrib: Matt Stephenson, Senior Principal Software Engineer
-  headline_stat: Two weeks
-  headline: Reduced to three hour deployments
+  headline_stat: Three hour
+  headline: Deployments reduced from two weeks
 
 sections:
     - label: Exec Summary

layouts/partials/header.html

@@ -103,7 +103,7 @@
                                                         <img src="/icons/magnifying-glass.svg" class="inline opacity-90" />
                                                     </span>
                                                     Pulumi Insights
-                                                    <div class="list-sub-title">Author infrastructure as code faster through AI. Search and analyze anything in any cloud.</div>
+                                                    <div class="list-sub-title">Asset management, compliance remediation, and AI insights over the cloud</div>
                                                 </a>
                                             </div>
                                         </li>