Disable `tsserver` buffer formatting in lspconfig

lsp.lua

-- https://neovim.discourse.group/t/autoformat-using-first-option-disable-formatting-on-tsserver/2500/3

require'lspconfig'.tsserver.setup{
  on_attach = function(client)
    client.server_capabilities.documentFormattingProvider = false
    client.server_capabilities.documentRangeFormattingProvider = false
  end,
}