gnome-welcome-tour: Add the config dir back

I accidentally removed it in the previous commit…
2 jobs for librem5-3-32-1 in 0 seconds (queued for 113 minutes and 50 seconds)
Status Job ID Name Coverage
  Build
failed #152199
build-maximal

failed #152198
build-minimal

 
Name Stage Failure
failed
build-maximal Build There has been a timeout failure or the job got stuck. Check your timeout limits or try again
No job trace
failed
build-minimal Build There has been a timeout failure or the job got stuck. Check your timeout limits or try again
No job trace