Add ellisonleao/dotenv.nvim (#960)

Co-authored-by: Thomas Versteeg <[email protected]>

README.md

@@ -226,6 +226,7 @@
 ### Markdown and LaTeX
 
 - [ellisonleao/glow.nvim](https://github.com/ellisonleao/glow.nvim) - Markdown preview using glow.
+- [ellisonleao/dotenv.nvim](https://github.com/ellisonleao/dotenv.nvim) - Minimalist .env support.
 - [iamcco/markdown-preview.nvim](https://github.com/iamcco/markdown-preview.nvim) - Preview markdown on your modern browser with synchronised scrolling and flexible configuration.
 - [davidgranstrom/nvim-markdown-preview](https://github.com/davidgranstrom/nvim-markdown-preview) - Markdown preview in the browser using pandoc and live-server through Neovim's job-control API.
 - [jghauser/auto-pandoc.nvim](https://github.com/jghauser/auto-pandoc.nvim) - Easy pandoc conversion leveraging yaml blocks.