NeoVintageous - Edit neovintageousrc
You can use the Command Palette NeoVintageous: Open RC File to edit the neovintageousrc file. A mapping is quicker. And why not. I recommend <leader>en. A mnemonic is "edit neovintageous". Create a mapping and reload your rc file:
vim
nnoremap <leader>en :Neovintageous action=open_rc_file<CR>