fix: Red doesn't work on GitHub

Author: Andrew Ferrier

README.md

@@ -119,14 +119,14 @@ end)
 
 ## Add Custom Filetypes
 
-<span style="color:red">Note: Since `debugprint.nvim` is still relatively new,
+*Note: Since `debugprint.nvim` is still relatively new,
 if you work out a configuration for a filetype not listed here, particularly a
 standard or common one that NeoVim supports out-of-the-box, it would be really
 appreciated if you can open an
 [issue](https://github.com/andrewferrier/debugprint.nvim/issues/new) to have it
 supported out-of-the-box in `debugprint` so others can benefit from it.
 Similarly, if you spot any issues with, or improvements to, the language
-configurations out-of-the-box, please open an issue also.</span>
+configurations out-of-the-box, please open an issue also.*
 
 `debugprint` supports the following filetypes out-of-the-box: