Fix typos in different languages

[adius]

Currently it's assumed everything is in English.
This can lead to false positives (especially in French and Spanish).
It should be checked which language the document is written in
and typos should be fixed accordingly.

[Fil]

Language in a code project is going to be hard to establish. One often uses a mix, some English or pseudo-English code, with comments in French (or even a mixed-bag of languages). Good luck!