French doc. update to follow John: update spindle section

Signed-off-by: Francis Tisserant <tissf@free.fr>
French doc. update - Sentences more understandable.

Signed-off-by: Francis Tisserant <tissf@free.fr>
French doc. update - Consistency between image and code

Signed-off-by: Francis Tisserant <tissf@free.fr>