Updates docs

Removes release-notes as they are already maintained on GitHub.

Author: sebastian-ederer

.claude/agents/changelog-generator.md

@@ -2,7 +2,7 @@
   "label": "Release notes",
   "position": 2,
   "link": {
-    "type": "generated-index",
-    "description": "View the release notes for each version."
+    "type": "doc",
+    "id": "release-notes/index"
   }
 }

docs/release-notes/_category_.json

@@ -0,0 +1,9 @@
+---
+sidebar_label: Release notes
+---
+
+# Release notes
+
+Release notes are maintained on GitHub. View all releases, changelogs, and downloadable assets here:
+
+**[GitHub Releases](https://github.com/cmdscale/CmdScale.EntityFrameworkCore.TimescaleDB/releases)**