Hi,
Well, it’s done in the translation file: src/libmsm/translations/msm_fr.ts · master · Applications / manjaro-settings-manager · GitLab
<message>
<location filename="../../modules/mhwd/ui/PageMhwd.ui" line="37"/>
<source>Auto Install
Open-source Driver</source>
<translation>Installation automatique
Pilote open-source</translation>
</message>
<message>
<location filename="../../modules/mhwd/ui/PageMhwd.ui" line="45"/>
<source>Auto Install
Proprietary Driver</source>
<translation>Installation automatique
Pilote propriétaire</translation>
</message>
So maybe an update or a compile operation was missed.
Regarding PulseAudio, you can have a look at Projects · PulseAudio / pulseaudio · GitLab.