Update releases.json (#9849)

Author: jamesmontemagno

release-notes/10.0/releases.json

@@ -12,7 +12,7 @@
       "release-date": "2025-04-10",
       "release-version": "10.0.0-preview.3",
       "security": false,
-      "release-notes": "https://github.com/dotnet/core/blob/main/release-notes/10.0/preview/10.0.0-preview.3.md",
+      "release-notes": "https://github.com/dotnet/core/blob/main/release-notes/10.0/preview/preview3/10.0.0-preview.3.md",
       "runtime": {
         "version": "10.0.0-preview.3",
         "version-display": "10.0.0-preview.3",