Fixed XML syntax.
merged branch aforsblo/translation_syntax_fix (PR #8006)

This PR was merged into the 2.1 branch.

Discussion
----------

[Validator] Fixed XML syntax in translation.

| Q             | A
| ------------- | ---
| Fixed tickets |
| License       | MIT

Commits
-------

0a4837d Fixed XML syntax.
removed CHANGELOG for 2.0 as it is not maintained anymore