translation feedback Feb 2020: fr - fix figure/example label template

[ghost]

fr

• [x] L10n file. <l:template name="figure-label" updated. Change '%nt' to '%n'.
• [x] L10n file. <l:template name="example-label" updated. Change '%nt' to '%n'

[janajaeger]

Fixed for Figure, but not for Example. This is an easy one for you, @tomschr