" auto yaml lint on write and auto setup standards
augroup yaml
autocmd! BufWritePost \*.yml :make
au FileType yaml setlocal tabstop=2 shiftwidth=2 softtabstop=2 autoindent expandtab makeprg=yamllint\\ %
augroup END
This will automatically setup standards for yaml to always match the correct syntax. It will also lint your yaml every time you save to the file.