Fix bad language format for XWiki formats. fixes #11879

[surli]

Proposed changes

Fix for #11879

Checklist

• [x] Lint and unit tests pass locally with my changes.
• [x] I have added tests that prove my fix is effective or that my feature works.
• [x] I have added documentation to describe my feature.
• [x] I have squashed my commits into logic units.
• [x] I have described the changes in the commit messages.

Other information

[nijel]

Looks good, scheduled for merge. Thanks!

[codecov[bot]]

Codecov Report

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

Project coverage is 90.59%. Comparing base (6aee586) to head (c2fefc6). Report is 2179 commits behind head on main.

Additional details and impacted files

[](https://app.codecov.io/gh/WeblateOrg/weblate/pull/11880?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=WeblateOrg) ```diff @@ Coverage Diff @@ ## main #11880 +/- ## ========================================== - Coverage 90.82% 90.59% -0.23% ========================================== Files 554 576 +22 Lines 57306 58776 +1470 Branches 9122 9383 +261 ========================================== + Hits 52046 53250 +1204 - Misses 3640 3831 +191 - Partials 1620 1695 +75 ``` | [Files](https://app.codecov.io/gh/WeblateOrg/weblate/pull/11880?dropdown=coverage&src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=WeblateOrg) | Coverage Δ | | |---|---|---| | [weblate/formats/tests/test\_formats.py](https://app.codecov.io/gh/WeblateOrg/weblate/pull/11880?src=pr&el=tree&filepath=weblate%2Fformats%2Ftests%2Ftest_formats.py&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=WeblateOrg#diff-d2VibGF0ZS9mb3JtYXRzL3Rlc3RzL3Rlc3RfZm9ybWF0cy5weQ==) | `99.76% <100.00%> (+<0.01%)` | :arrow_up: | | [weblate/formats/ttkit.py](https://app.codecov.io/gh/WeblateOrg/weblate/pull/11880?src=pr&el=tree&filepath=weblate%2Fformats%2Fttkit.py&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=WeblateOrg#diff-d2VibGF0ZS9mb3JtYXRzL3R0a2l0LnB5) | `90.84% <100.00%> (-0.57%)` | :arrow_down: | ... and [326 files with indirect coverage changes](https://app.codecov.io/gh/WeblateOrg/weblate/pull/11880/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=WeblateOrg)