Blog tutorial needs improvement

[lodotek]

This is implying that the proto.go file is NOT empty:
https://github.com/tendermint/starport/blob/c3066575d2fe4bfd31e630ac18a91150ea390418/docs/guide/blog/index.md?plain=1#L189

But on line 190 it instructs us to create an empty file x/blog/keeper/post.go

This tutorial is not clear and really needs some improvement.

Thank you.

[ilgooz]

moved here: #2418