Fix typo in french locale

[cmalard]

No description provided.

[fflorent]

Thanks for the patch !
I'll let @janodvarko answer officially, but changes to the locales should be submitted through babelzilla.

Florent

[cmalard]

BabelZilla is impressively not intuitive ^^
I made the fix there 👍 I let you close this PR if it was the good process.

What's next ? It looks like there is no approval process. Are you notified ?
I found some minor differences between the locale on Babel and here on GitHub, some typo on Babel that aren't here. I fixed them, but I wonder why there were differences (last update of the file on Babel was in 2015).

-> could you add some info in the README / CONTRIBUTING that translations should be done in BabeZilla ( https://www.babelzilla.org/index.php?option=com_wts&Itemid=0&type=show&extension=4387 ) (it is required to register as a translator for the locale)