Move "Migrating to 2.0" page

Author: markerikson

docs/migrations/1.x-to-2.x.md renamed to docs/usage/migrating-rtk-2.md

@@ -1,7 +1,7 @@
 ---
-id: migrating-1.x-to-2.x
-title: Migrating 1.x → 2.x
-sidebar_label: Migrating 1.x → 2.x
+id: migrating-rtk-2
+title: Migrating to RTK 2.x and Redux 5.x
+sidebar_label: Migrating to RTK 2.x and Redux 5.x
 hide_title: true
 toc_max_heading_level: 4
 ---
@@ -10,7 +10,7 @@ toc_max_heading_level: 4
 
 <div className="migration-guide">
 
-# Migrating 1.x → 2.x
+# Migrating to RTK 2.x and Redux 5.x
 
 :::tip What You'll Learn
 

website/_redirects

@@ -12,3 +12,4 @@
 # Relocated content
 /rtk-query/usage/optimistic-updates     /rtk-query/usage/manual-cache-updates#optimistic-updates
 /rtk-query/api/created-api/cache-management-utils     /rtk-query/api/created-api/api-slice-utils
+/migrations/migrating-1.x-to-2.x     /usage/migrating-rtk-2

website/sidebars.json

@@ -26,7 +26,7 @@
         {
           "type": "category",
           "label": "Migrations",
-          "items": ["migrations/migrating-1.x-to-2.x"]
+          "items": ["usage/migrating-rtk-2"]
         },
         "usage/usage-guide",
         "usage/usage-with-typescript",