Proposal : Update Anime Goal FH: Field Hunter source

Proposal details

This proposal will make the following change(s):

Update the source of the anime Goal FH: Field Hunter

Change the source from Unknown to Manga

Based on the following reason: Missing

With the source: https://myanimelist.net/anime/5217/Goal_FH__Field_Hunter?q=Goal%20FH%3A%20Field%20Hunter&cat=anime