Fixes Dark mode issue with Enterprise Notice

Author: fdevans

docs/.vuepress/styles/index.scss

@@ -276,6 +276,15 @@ html[data-theme=dark] {
   #main-title .a {
     color: #fff;
   }
+  
+  .custom-container.enterprise {
+    background-color: #2a2a2a;
+    border-color: #06ac38;
+    
+    .custom-container-title {
+      color: #fff;
+    }
+  }
 
   #main-description {
     color: #fff