Rename "Experimental Features" to "Experimental" and move to bottom

Renames the Advanced Topics sidebar entry and moves it after
Extensibility so it appears at the bottom of the section.

Author: claude

docs/.vitepress/config.mjs

@@ -250,17 +250,6 @@ export default defineConfig({
           { text: "HTTP Connector", link: "/advanced/http" },
           { text: "Fiori Elements Integration", link: "/advanced/fiori" },
           { text: "UI5 Legacy-Free", link: "/advanced/legacy_free" },
-          {
-            text: "Experimental Features",
-            collapsed: true,
-            items: [
-              { text: "Drag & Drop", link: "/development/specific/drag" },
-              {
-                text: "Smart Controls",
-                link: "/development/specific/smart_controls",
-              },
-            ],
-          },
           {
             text: "Extensibility",
             items: [
@@ -276,6 +265,17 @@ export default defineConfig({
               },
             ],
           },
+          {
+            text: "Experimental",
+            collapsed: true,
+            items: [
+              { text: "Drag & Drop", link: "/development/specific/drag" },
+              {
+                text: "Smart Controls",
+                link: "/development/specific/smart_controls",
+              },
+            ],
+          },
         ],
       },
       {