chore(docs): fix docs build (#3249)

Please provide a paragraph or two giving a summary of the change,
including relevant motivation and context.

# Checklist:
Remove the checklist to signal you've completed it. Enable auto-merge if
the PR is ready to merge.
- [ ] If the pull request requires a cryptography review (e.g.
cryptographic algorithm implementations) I have added the 'crypto' tag.
- [ ] I have reviewed my diff in github, line by line and removed
unexpected formatting changes, testing logs, or commented-out code.
- [ ] Every change is related to the PR description.
- [ ] I have
[linked](https://docs.github.com/en/issues/tracking-your-work-with-issues/linking-a-pull-request-to-an-issue)
this pull request to relevant issues (if any exist).

docs/docs/dev_docs/debugging/aztecnr-errors.md

@@ -26,7 +26,7 @@ This error may also show if the `compute_note_hash_and_nullifier` function is no
 
 #### `backend has encountered an error`
 
-This is likely due to a version mismatch or bad install of barretenberg. Try [reinstalling nargo](../cli/updating.md) or uninstalling barretenberg:
+This is likely due to a version mismatch or bad install of barretenberg. Try [reinstalling nargo](../updating.md) or uninstalling barretenberg:
 
 ```bash
 nargo backend uninstall acvm-backend-barretenberg

docs/sidebars.js

@@ -431,7 +431,6 @@ const sidebars = {
       type: "category",
       items: [],
     },*/
-    "dev_docs/sandbox_errors/main",
     "dev_docs/privacy/main",
     "dev_docs/limitations/main",