fix: re-configure changelog sections

docs/docs/guides/changelog/README.mdx

@@ -1,7 +1,7 @@
 ---
-title: Changelogs
+title: Changelog
-slug: /guides/changelogs/
+slug: /guides/changelog/
-sidebar_position: 12
+sidebar_position: 5
 description: Jan is a ChatGPT-alternative that runs on your own computer, with a local API server.
 keywords:
   [

docs/docs/guides/changelogs/_category_.json

@@ -1,8 +0,0 @@
-{
-  "label": "Changelogs",
-  "position": 5,
-  "link": {
-    "type": "generated-index",
-    "description": "Changelog for Jan"
-  }
-}