Rename genre to genres on manga endpoint

[doron-goldstein]

Anime uses genres, so I thought it would be nicer to have it uniform and name it genres in Manga as well. (already made my code fail once haha)

[irfan-dahir]

Oops, this is embarrassing. Sorry about this!

I've removed multiple suffixes of the use of 's' after some array type elements. Such as 'authors' -> 'author' and 'genres' -> 'genre' since the 0.2.3 alpha (June 2, 17) source.

It seems I've forgotten to unify it for some 'endpoints'. I'll be releasing a patch for this today.

It'll be 'genre' from now for both anime and manga. :)

[doron-goldstein]

Ah I see. Thanks!

[irfan-dahir]

I've just released patch 0.2.6 for it.

Read this for the changes.
https://github.com/irfan-dahir/jikan#026-beta---june-21-17

[doron-goldstein]

actually, @irfan-dahir it seems anime still uses 'genres'.

[irfan-dahir]

@BlackSynder Ah, that's the cache. I've cleared it so it should be updated one now.