Proposal : Update Series Tetsujin 28-gou japanese name

Proposal details

This proposal will make the following change(s):

Update the japanese name of the series Tetsujin 28-gou

Change the japanese name from Unknown to 鉄人２８号

Based on the following reason: Missing

With the source: https://myanimelist.net/anime/2686/Tetsujin_28-gou?q=Tetsujin%2028&cat=anime