Docs: Minor document structure tweak. (#13346)

### What problem does this PR solve?

Refactored the document architecture.

### Type of change

- [x] Documentation Update

docs/administrator/_category_.json

@@ -1,11 +1,11 @@
 {
   "label": "Administrator guides",
-  "position": 3,
+  "position": 4,
   "link": {
     "type": "generated-index",
     "description": "Guides for system administrtors"
   },
   "customProps": {
-    "sidebarIcon": "LucidComputer"
+    "sidebarIcon": "LucideComputer"
   }
 }

docs/administrator/migrate_to_single_bucket_mode.md

@@ -1,6 +1,9 @@
 ---
 sidebar_position: 15
 slug: /migrate_to_single_bucket_mode
+sidebar_custom_props: {
+  categoryIcon: LucideLocateFixed
+}
 ---
 
 # Migrate from multi-Bucket to single-bucket mode

docs/develop/_category_.json

@@ -1,6 +1,6 @@
 {
   "label": "Developer guides",
-  "position": 4,
+  "position": 5,
   "link": {
     "type": "generated-index",
     "description": "Guides for hardcore developers"

docs/guides/models/supported_models.mdx

@@ -1,5 +1,5 @@
 ---
-sidebar_position: 1
+sidebar_position: 3
 slug: /supported_models
 sidebar_custom_props: {
   categoryIcon: LucideBox