Uniformize code and doxygen

htdocs/core/modules/mailings/contacts1.modules.php

htdocs/core/modules/mailings/contacts2.modules.php

htdocs/core/modules/mailings/contacts3.modules.php

htdocs/core/modules/mailings/example.modules.php

htdocs/core/modules/mailings/fraise.modules.php

htdocs/core/modules/mailings/framboise.modules.php

htdocs/core/modules/mailings/modules_mailings.php

htdocs/core/modules/mailings/peche.modules.php

htdocs/core/modules/mailings/pomme.modules.php

htdocs/core/modules/mailings/thirdparties.modules.php

...odules/mailings/thirdparties_services_expired.modules.php