[Xfce-i18n] xfce4-docklike-plugin: French translation

[Akbarkhon Variskhanov]

Hello.

A kind user reported translation errors in xfce4-docklike-plugin:
https://forum.xfce.org/viewtopic.php?id=16114

Knowing very little how Romance languages work, some of the
strings look correct to me. Could a French speaker please look
into this and correct errors if they exist?

Merci.

Kind regards,
Akbar,