fix syntax

Signed-off-by: Nick Slowinski <nick@nick-slowinski.de>

renovate.json

@@ -1,17 +1,15 @@
 {
-  "$schema": "https://docs.renovatebot.com/renovate-schema.json"
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
-  {
+  "packageRules": [
-    "packageRules": [
+    {
-      {
+      "extends": "monorepo:docusaurus",
-        "extends": "monorepo:docusaurus",
+      "groupName": "docusaurus monorepo",
-        "groupName": "docusaurus monorepo",
+      "matchUpdateTypes": [
-        "matchUpdateTypes": [
+        "digest",
-          "digest",
+        "patch",
-          "patch",
+        "minor",
-          "minor",
+        "major"
-          "major"
+      ]
-        ]
+    }
-      }
+  ]
-    ]
-  }
 }