r.in.lidar: use standard -e msg text

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@57944 15284696-431f-4ddb-bdfa-cd5b030d7da7

raster/r.in.lidar/main.c

@@ -239,7 +239,7 @@ int main(int argc, char *argv[])
     extents_flag = G_define_flag();
     extents_flag->key = 'e';
     extents_flag->description =
-	_("Use input extents instead of region extents");
+	_("Extend region extents based on new dataset");
 
     over_flag = G_define_flag();
     over_flag->key = 'o';