bug: Typo in HL group docs

[enfantrichedeprime]

Did you check docs and existing issues?

• I have read the Portal docs
• I have searched the existing issues of Portal

Neovim version (nvim -v)

latest

Operating system/version

MacOS

Describe the bug

There's a typo in the docs.

"PoralTitle" should be "PortalTitle"

The group name itself is working correctly, e.g
vim.api.nvim_set_hl(0, "PortalTitle", { link = "NormalFloat" })

Great plugin btw!

Steps To Reproduce

vim.api.nvim_set_hl(0, "PoralTitle", { link = "NormalFloat" })

Expected Behavior

vim.api.nvim_set_hl(0, "PortalTitle", { link = "NormalFloat" })

Repro