Revert "docs: durable contract details collected in one place" (#1253)

This reverts commit 28cb2fb.

Author: Chris-Hibbert

main/.vitepress/config.mjs

@@ -216,10 +216,6 @@ export default defineConfig({
                   text: 'Complete Contract Walk-Through',
                   link: '/guides/zoe/contract-walkthru',
                 },
-                {
-                  text: 'Durable Contract Details',
-                  link: '/guides/zoe/contract-details',
-                },
                 {
                   text: 'Contract Upgrade',
                   link: '/guides/zoe/contract-upgrade',