Language: Legal: fix translation string to use the one that exist with all the translations

public/main/auth/inscription.php

@@ -1100,7 +1100,7 @@ if ($form->validate()) {
                             $currentUserInfo['complete_name']
                         );
                         $contentEmail = sprintf(
-                            get_lang('User %s signed the agreement.TheY'),
+                            get_lang('User %s signed the agreement the %s.'),
                             $currentUserInfo['complete_name'],
                             api_get_local_time($time)
                         );

public/main/social/personal_data.php

@@ -88,7 +88,7 @@ switch ($action) {
                     $currentUserInfo['complete_name']
                 );
                 $contentEmail = sprintf(
-                    get_lang('User %s signed the agreement.TheDateY'),
+                    get_lang('User %s signed the agreement the %s.'),
                     $currentUserInfo['complete_name'],
                     api_get_local_time()
                 );