Update messages_fr.properties

[XavSPM]

Change variable names :

InformativTooltipPVName
InformativeTooltopAlarmBorder

to :

InformativeTooltipAlarmBorder
InformativeTooltipPVName

Checklist

• Testing:

  • The feature has automated tests
  • Tests were run
  • If not, explain how you tested your changes

• Documentation:

  • The feature is documented
  • The documentation is up to date
  • Release notes:
    • Added an entry if the change is breaking or significant
    • Added an entry when adding a new feature