landmark-complementary-is-top-level docs' failing example doesn't fail

### Product

axe-core

### Description

The [`landmark-complementary-is-top-level` doc page](https://dequeuniversity.com/rules/axe/4.11/landmark-complementary-is-top-level) includes this failing example:

> The following example FAILS the Complementary landmarks are at the top level rule:
>
> ```html
>
>

Some text

An aside

However, that example doesn't actually fail the rule - we started passing it when #2651 was fixed. We should replace the example with something that actually fails the rule.

### Context

See also #4950

Open the linked landmark-complementary-is-top-level documentation page and review the failing example in the issue, then check the rule behavior after the fix in #2651. Replace the example with one that actually fails the rule, and verify the documentation no longer presents a passing example as a failure.

Written by the indexing model from the issue text.