The web page http://www.gnupg.org/howtos/fr/index.html has a wrong encoding.
The page is declared as UTF-8 but accents (non ASCII letters) are not displayed
correctly.

For example "ç" is encoded as 0xefbfbd but should be 0xc3a7. I have no idea what
encoding the file is using.

Only the main page is incorrect. The chapters are correct and are using
charset=ISO-8859-1 instead of UTF-8

I attach a corrected version of the file (in UTF-8)