Apply HTML lang in correct spot

[awharn]

What It Does

Fix the last SonarCloud bug (and my own mistake)

How to Test

Review Checklist I certify that I have:

• [ ] tested my changes
• [ ] added/updated automated tests
• [ ] updated the changelog
• [x] followed the contribution guidelines

Additional Comments

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (603fc28) 91.07% compared to head (2b6ecc6) 91.07%. Report is 1 commits behind head on master.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #2056 +/- ## ======================================= Coverage 91.07% 91.07% ======================================= Files 636 636 Lines 18965 18965 Branches 3977 3976 -1 ======================================= Hits 17272 17272 Misses 1692 1692 Partials 1 1 ```

:umbrella: View full report in Codecov by Sentry.
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[sonarcloud[bot]]

Quality Gate passed

Issues
0 New issues

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud