fix/migration 3p11 (#5370)

platform/docs/versioned_docs/version-3.11/migration-guide/3p9-to-3p10/index.md

@@ -0,0 +1,11 @@
+---
+sidebar_position: 1
+sidebar_label: 3.9 -> 3.10
+title: Migration Guide from 3.9 to 3.10 beta
+summary: Migration guide for upgrading from OHIF 3.9 to 3.10 beta, covering general changes, customization service improvements, UI component upgrades, command handling, hotkey updates, routing changes, and testing strategies.
+---
+
+# Migration Guide
+
+
+## General