fix: retrait du slash fermant des balises html

ecrire/exec/admin_plugin.php

ecrire/exec/upgrade.php

ecrire/inc/admin.php

ecrire/inc/chercher_rubrique.php

ecrire/inc/cvt_autosave.php

ecrire/inc/cvt_configurer.php

ecrire/inc/cvt_multietapes.php

ecrire/inc/editer.php

ecrire/inc/filtres.php

ecrire/inc/filtres_ecrire.php

ecrire/inc/filtres_images_lib_mini.php

ecrire/inc/filtres_mime.php

ecrire/inc/informer.php

ecrire/inc/install.php

ecrire/inc/lang.php

ecrire/inc/presentation_mini.php

ecrire/inc/presenter_enfants.php

ecrire/inc/securiser_action.php

ecrire/inc/selectionner.php

ecrire/inc/session.php