Update textbook.fr.md

Status Job ID Name Coverage
  Deploy
failed #10267
deploy

00:00:21

 
Name Stage Failure
failed
deploy Deploy
$ curl --no-buffer --silent --show-error https://m3p2.com/sync
curl: (60) SSL certificate problem: certificate has expired
More details here: https://curl.haxx.se/docs/sslcerts.html

curl failed to verify the legitimacy of the server and therefore could not
establish a secure connection to it. To learn more about this situation and
how to fix it, please visit the web page mentioned above.
Cleaning up project directory and file based variables
ERROR: Job failed: exit code 60