neovim: Add missing newlines to init.lua

[Talljoe]

Description

When generating init.lua the Lua config would be placed immediately after the nvim config without a new line.

vim.cmd [[source /nix/store/cs3al9x1ml5ds3n6n433wcdxp89awac4-nvim-init-home-manager.vim]]--first line of Lua config

This change places a newline after each config portion.

vim.cmd [[source /nix/store/cs3al9x1ml5ds3n6n433wcdxp89awac4-nvim-init-home-manager.vim]]
--first line of Lua config

Checklist

• [X] Change is backwards compatible.

• [X] Code formatted with ./format.

• [X] Code tested through nix-shell --pure tests -A run.all or nix develop --ignore-environment .#all using Flakes.

• [X] Test cases updated/added. See example.

• [X] Commit messages are formatted like

  {component}: {description}
  
  {long description}
  

  See CONTRIBUTING for more information and recent commit messages for examples.

• If this PR adds a new module

  • [x] Added myself as module maintainer. See example.

Maintainer CC

[Talljoe]

I will try to fixup this PR this weekend

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[stale[bot]]

Thank you for your contribution! I marked this pull request as stale due to inactivity. Please read the relevant sections below before commenting.

If you are the original author of the PR

• GitHub sometimes doesn't notify people who commented / reviewed a PR previously when you (force) push commits. If you have addressed the reviews you can officially ask for a review from those who commented to you or anyone else.
• If it is unfinished but you plan to finish it, please mark it as a draft.
• If you don't expect to work on it any time soon, please consider closing it with a short comment encouraging someone else to pick up your work.
• To get things rolling again, rebase the PR against the target branch and address valid comments.

If you are not the original author of the PR

• If you want to pick up the work on this PR, please create a new PR and indicate that it supercedes and closes this PR.