chore: modify cleandb script to remove pg volume

Author: NGPixel

docker/cleandb

@@ -5,7 +5,7 @@ echo "Shutting down any instance still running..."
 docker compose down
 echo "Removing DB volume..."
 PROJNAME=$(basename $PWD)
-docker volume rm -f "${PROJNAME}_mariadb-data"
+docker volume rm -f "${PROJNAME}_postgresdb-data"
 echo "Rebuilding the DB image..."
 docker compose pull db
 docker compose build --no-cache db