methods: Fix french grammar
methods: Fix french grammar

Forwarded: https://github.com/dupoxy/go-tour-fr/pull/33
Change-Id: I4161635a59687fb1e7cd5b471c76758078bb2191
Signed-off-by: Philippe Coval <e55eb7f5ae8caa4c9c0d2fc7cb5c13ca6c4cd6e0@samsung.com>

dupoxy/go-tour-fr,dupoxy/go-tour-fr,dupoxy/go-tour-fr