fix(website): route all CTAs to Calendly contact page

Author: jfarcand

website/src/components/Hero.astro

@@ -26,8 +26,8 @@
     </p>
 
     <div class="hero-actions">
-      <a href="https://github.com/Atmosphere/atmosphere" class="btn btn-primary" target="_blank" rel="noopener">
-        Get Started
+      <a href="/contact/" class="btn btn-primary">
+        Talk to Us
         <svg width="16" height="16" viewBox="0 0 16 16" fill="none">
           <path d="M3 8h10M9 4l4 4-4 4" stroke="currentColor" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"/>
         </svg>