Language: Fix typo in use of term "Your registration on" in registration e-mails - refs #7174

Author: ywarnier

src/CoreBundle/Resources/views/Mailer/Legacy/subject_registration_platform.html.twig

@@ -1,4 +1,4 @@
 {% set user_locale = locale is defined ? locale : 'en' %}
 {% trans_default_domain 'messages' %}
 
-{{ '['~ 'platform.site_name' | api_get_setting ~ '] ' ~ 'Your registration on %s'|trans({'%s', 'platform.site_name' | api_get_setting}, 'messages', user_locale) }}
+{{ '['~ 'platform.site_name' | api_get_setting ~ '] ' ~ 'Your registration on %s'|trans({'%s': 'platform.site_name' | api_get_setting }, 'messages', user_locale) }}

src/CoreBundle/Resources/views/Mailer/Legacy/subject_subscription_to_session_confirmation.html.twig

@@ -1,3 +1,3 @@
 {% set user_locale = locale is defined ? locale : 'en' %}
 {% trans_default_domain 'messages' %}
-[ {{ 'platform.site_name' | api_get_setting }} ] {{ 'Your registration on %s'|trans({'%s', 'platform.site_name' | api_get_setting}, 'messages', user_locale) }}
+[ {{ 'platform.site_name' | api_get_setting }} ] {{ 'Your registration on %s'|trans({'%s': 'platform.site_name' | api_get_setting}, 'messages', user_locale) }}