the best way to get curators’ or staff attention to this sort of thing is to go to the parent taxon page – in this case, probably the genus Pinus, or perhaps the page for P. monticola – and to flag it for curation. on the web version of iNaturalist, this can be found in the drop-down menu to the right of all the page tabs – see picture:
definitely check the existing flags (“View Flags” in the screenshot), but if none of them are relevant to your question about adding or changing a taxon, go ahead and make a new flag.
I will say though, hybrids are often controversial to diagnose; please be sure to mention in your flag a reliable reference (or several) that discusses the P. monticola × P. strobus hybridisation!