Typos + missing + sorting use

[resu-xuniL]

• Fixed a typo in BookStoreTest.php
• Fixed a missing use statement in word_countTest.php
• Harmonise the order of the use statements
• Removed useless comments on MarkdownTest.php and its example.php
• Add rule to sort use statement + apply

[no important files changed]

Tell me if i shall drop one or more, or all of these!

[github-actions]

This PR touches files which potentially affect the outcome of the tests of an exercise. This will cause all students' solutions to affected exercises to be re-tested.

If this PR does not affect the result of the test (or, for example, adds an edge case that is not worth rerunning all tests for), please add the following to the merge-commit message which will stops student's tests from re-running. Please copy-paste to avoid typos.

[no important files changed]

For more information, refer to the documentation. If you are unsure whether to add the message or not, please ping @exercism/maintainers-admin in a comment. Thank you!

[mk-mxp]

OK, the issue was a commit, that only added the TestDox use above the other uses, but did not remove the lower use of TestDox. That likely happened as you merged in the changes to main. It's better to rebase the branches on main:

git checkout main
git pull -p
git checkout typos-missing-sorting-use
git rebase main
git push -f

[resu-xuniL]

Thanks for your help