Synchronize documentation.

Author: Infinity Curator

website/docs/getstarted/quickstart.md renamed to website/docs/getstarted/quickstart.mdx

@@ -4,6 +4,8 @@ slug: /
 ---
 
 # Quickstart
+import Tabs from '@theme/Tabs';
+import TabItem from '@theme/TabItem';
 
 A quickstart guide.