Reverse items below upgrade guide

Author: axelrindle

docs/docs/upgrading/_category_.json

@@ -4,5 +4,8 @@
     "link": {
         "type": "doc",
         "id": "upgrading/index"
+    },
+    "customProps": {
+        "reverse": true
     }
 }

docs/docusaurus.config.js

@@ -40,7 +40,17 @@ const config = {
             current: {
               label: '🔜 Next'
             }
-          }
+          },
+          async sidebarItemsGenerator({defaultSidebarItemsGenerator, ...args}) {
+            const sidebarItems = await defaultSidebarItemsGenerator(args);
+            const result = sidebarItems.map((item) => {
+                if (item.type === 'category' && item.customProps?.reverse) {
+                    return {...item, items: item.items.reverse()};
+                }
+                return item;
+            });
+            return result;
+          },
         },
         blog: false,
         theme: {