How can I configure my Packer configuration to load obsivian.nvim only for markdown file in ~/vaults/?

[stephane-klein]

How can I apply this configuration:

  ft = "markdown",
  -- Replace the above line with this if you only want to load obsidian.nvim for markdown files in your vault:
  -- event = {
  --   -- If you want to use the home shortcut '~' here you need to call 'vim.fn.expand'.
  --   -- E.g. "BufReadPre " .. vim.fn.expand "~" .. "/my-vault/**.md"
  --   "BufReadPre path/to/my-vault/**.md",
  --   "BufNewFile path/to/my-vault/**.md",
  -- },

with Packer?

I searched for this information, but I found no mention of these parameters in the Packer section.

Best regards,
Stéphane