Add a test in order to test issue such the one reported in here

[comwes]

Now I remember what the issue was. It was caused, I think, by mkdocs itself.
When you had heading on a page with diacritics, the element id (used for hash navigation) skipped diacritical letters (heading "Červená máňa" had id "erven-ma") which was very impractical. We resorted to using uslugify, which stripped only diacriticals, not whole letters.
You can probably take my comments just as a "reminder" to test tolerance to unicode characters

Originally posted by @trogper in #35 (comment)

[comwes]

@trogper as you can see in the joined pdf, your exemple is working as expected. I think the problem might probably occur with python2 which we are planning to no longer support starting the upcoming release.

docu-test.pdf

KR,
@comwes

[trogper]

actually the link in Second topic does not work.
is it linked to the first topic or to červená máňa?

[comwes]

Indeed that link does not work because the page it is supposed to reference does not exist in the generated pdf which is normal.