Expose filesystem cli commands in docs (#4338)

<!-- PR description-->

Exposes docs for new CLI commands `repo init filesystem` and `repo connect filesystem`

---

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

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

#### Type of change

<!--- Please check the type of change your PR introduces: --->
- [ ] 🌻 Feature
- [ ] 🐛 Bugfix
- [x] 🗺️ Documentation
- [ ] 🤖 Supportability/Tests
- [ ] 💻 CI/Deployment
- [ ] 🧹 Tech Debt/Cleanup

#### Issue(s)

<!-- Can reference multiple issues. Use one of the following "magic words" - "closes, fixes" to auto-close the Github issue. -->
* #<issue>

#### Test Plan

<!-- How will this be tested prior to merging.-->
- [x] 💪 Manual
- [ ] ⚡ Unit test
- [ ] 💚 E2E

website/sidebars.js

@@ -50,6 +50,8 @@ const sidebars = {
           items: [
             'cli/corso-repo-init-s3',
             'cli/corso-repo-connect-s3',
+            'cli/corso-repo-init-filesystem',
+            'cli/corso-repo-connect-filesystem',
             'cli/corso-repo-maintenance',
             'cli/corso-env']
         },