Description

Custom keymaps setting doesn't work follow the instruction in README.

Steps to Reproduce

1. set keymaps.enabled = false in setup
2. use vim.keymap.set("i", "<CR>", "<Plug>(MarkdownPlusListEnter)") to set custome keymap

Expected Behavior

<CR> works right.

Actual Behavior

After pressing <CR> in insert mode, text <Plug>(MarkdownPlusListEnter) is inserted.

Environment

• Neovim version: v0.11.5
• Plugin version: 7d0d052
• OS: Linux

Additional Context

I viewed the source code and found that <Plug> won't be set if keymaps.enabled is false.