docs: general fixes to cart and order concept docs (#13270)

www/apps/resources/generated/generated-commerce-modules-sidebar.mjs

@@ -3355,7 +3355,15 @@ const generatedgeneratedCommerceModulesSidebarSidebar = {
               "isPathHref": true,
               "type": "link",
               "path": "/commerce-modules/fulfillment/concepts",
-              "title": "Fulfillment Concepts",
+              "title": "General Concepts",
+              "children": []
+            },
+            {
+              "loaded": true,
+              "isPathHref": true,
+              "type": "link",
+              "path": "/commerce-modules/fulfillment/item-fulfillment",
+              "title": "Item Fulfillment",
               "children": []
             },
             {
@@ -3374,14 +3382,6 @@ const generatedgeneratedCommerceModulesSidebarSidebar = {
               "title": "Shipping Option",
               "children": []
             },
-            {
-              "loaded": true,
-              "isPathHref": true,
-              "type": "link",
-              "path": "/commerce-modules/fulfillment/item-fulfillment",
-              "title": "Item Fulfillment",
-              "children": []
-            },
             {
               "loaded": true,
               "isPathHref": true,