fix: Fix typo in tab stop instructions

[codeofdusk]

Details

This PR fixes a small typo in the tab stop instructions.

Context

Discovered during 2.39.0 release validation.

Pull request checklist

• [n/a] Addresses an existing issue: #0000
• Ran yarn fastpass
• Added/updated relevant unit test(s) (and ran yarn test)
• [n/a] Verified code coverage for the changes made. Check coverage report at: <rootDir>/test-results/unit/coverage
• PR title AND final merge commit title both start with a semantic tag (fix:, chore:, feat(feature-name):, refactor:). See CONTRIBUTING.md.
• (UI changes only) Added screenshots/GIFs to description above
• (UI changes only) Verified usability with NVDA

[JGibson2019]

It seems the guidance-content.test snapshots haven't been updated and that's causing a failure; we'd need to update that in the e2e folder and then we should be good to go! Other than that LGTM

[madalynrose]

On second thought, I actually think this is as designed. The ad-hoc test does not involve DetailsView and therefore there is no window that the user needs to return to after testing the page. They just need to traverse the page and notice if the visualization marks any unexpected behavior.

Scope of PR reduced