Add Restore options to side navbar (#3828)

Items in navbar appear in the order declared.

---

#### Does this PR need a docs update or release note?

- [ ] ✅ Yes, it's included
- [ ] 🕐 Yes, but in a later PR
- [x] ⛔ No

#### Type of change

- [ ] 🌻 Feature
- [x] 🐛 Bugfix
- [x] 🗺️ Documentation
- [ ] 🤖 Supportability/Tests
- [ ] 💻 CI/Deployment
- [ ] 🧹 Tech Debt/Cleanup

#### Issue(s)

* #3562

#### Test Plan

- [x] 💪 Manual
- [ ] ⚡ Unit test
- [ ] 💚 E2E

website/sidebars.js

@@ -20,7 +20,15 @@ const sidebars = {
     {
       type: 'category',
       label: 'Usage',
-      items: ['setup/concepts', 'setup/download', 'setup/m365-access', 'setup/configuration', 'setup/repos', 'setup/fault-tolerance'],
+      items: [
+        'setup/concepts',
+        'setup/download',
+        'setup/m365-access',
+        'setup/configuration',
+        'setup/repos',
+        'setup/fault-tolerance',
+        'setup/restore-options'
+      ],
     },
     {
       type: 'category',