/runtime -> /support

Closes gh-192

Author: rwinch

src/partials/header-content.hbs

@@ -151,7 +151,7 @@
           <a class="navbar-link" href="#">Solutions</a>
           <div class="navbar-dropdown lg">
             <a class="navbar-item" href="https://spring.io/solutions">Overview</a>
-            <a class="navbar-item" href="https://spring.io/runtime">Spring Runtime</a>
+            <a class="navbar-item" href="https://spring.io/support">Spring Runtime</a>
             <a class="navbar-item" href="https://spring.io/consulting">Spring Consulting</a>
             <a class="navbar-item" href="https://spring.academy/teams">Spring Academy For Teams</a>
             <a class="navbar-item" href="https://spring.io/security">Security Advisories</a>
@@ -216,4 +216,4 @@
     document.getElementById('switch-theme-checkbox').parentElement.classList.add('active')
   }
 }(localStorage && localStorage.getItem('theme') || (matchMedia('(prefers-color-scheme: dark)') && 'dark'))
-</script>
+</script>