Add version 2.10 preview

versioned_docs/version-2.10/api/api-reference.mdx

@@ -0,0 +1,18 @@
+---
+title: API Reference
+hide_table_of_contents: true
+---
+
+<head>
+  <link rel="canonical" href="https://ranchermanager.docs.rancher.com/api/api-reference"/>
+</head>
+
+:::note
+
+At this time, not all Rancher resources are available through the Rancher Kubernetes API.
+
+:::
+
+import ApiDocMdx from '@theme/ApiDocMdx';
+
+<ApiDocMdx id="rancher-api" />