'fullnamedisplay' had missing escape chars ('\') before the '$' char …

…(thanks Eloy !)

lang/fr/moodle.php

@@ -333,7 +333,7 @@
 $string['frontpagenews'] = "Afficher les brèves";
 $string['fulllistofcourses'] = "Liste complète des cours";
 $string['fullname'] = "Nom complet";
-$string['fullnamedisplay'] = "$a->firstname $a->lastname";
+$string['fullnamedisplay'] = "\$a->firstname \$a->lastname";
 $string['fullprofile'] = "Fiche complète";
 $string['fullsitename'] = "Nom complet du site";
 $string['gd1'] = "GD 1.x est installé";