… (javiereguiluz)This PR was squashed before being merged into the 4.2 branch (closes#31786).Discussion----------[Translation] Fixed case sensitivity of lint:xliff command| Q             | A| ------------- | ---| Branch?       | 4.2| Bug fix?      | yes| New feature?  | no <!-- please update src/**/CHANGELOG.md files -->| BC breaks?    | no     <!-- seehttps://symfony.com/bc -->| Deprecations? | no <!-- please update UPGRADE-*.md and src/**/CHANGELOG.md files -->| Tests pass?   | yes    <!-- please add some, will be required by reviewers -->| Fixed tickets | -| License       | MIT| Doc PR        | (not needed)I was checking some errors of `lint:xliff` (https://travis-ci.org/EasyCorp/EasyAdminBundle/jobs/540053551#L657) and saw this:```ERROR  in src/Resources/translations/EasyAdminBundle.sr_RS.xlf * There is a mismatch between the language included in the file name ("EasyAdminBundle.sr_RS.xlf") and the "sr-rs" value used in the "target-language" attribute of the file.ERROR  in src/Resources/translations/EasyAdminBundle.zh_CN.xlf * There is a mismatch between the language included in the file name ("EasyAdminBundle.zh_CN.xlf") and the "zh-cn" value used in the "target-language" attribute of the file.```This was suspicious, so I checked the XLIFF standard and it says (http://docs.oasis-open.org/xliff/v1.2/os/xliff-core.html#target-language):```target-language:  Unlike the other XLIFF attributes, the values are not case-sensitive.```So, it's valid that `zh-cn` is the target language and `zh-CN` is the file extension. This PR fixes that.Commits-------ec690b2 [Translation] Fixed case sensitivity of lint:xliff command