docs: add *Delta* example for log_pager

Author: stevenxxiu

README.md

@@ -33,6 +33,7 @@ Here's an example spec for [Lazy](https://github.com/folke/lazy.nvim), but you'r
   dependencies = {
     "nvim-lua/plenary.nvim",         -- required
     "sindrets/diffview.nvim",        -- optional - Diff integration
+    "m00qek/baleia.nvim",            -- optional - Required for a custom log pager
 
     -- Only one of these is needed.
     "nvim-telescope/telescope.nvim", -- optional
@@ -90,7 +91,7 @@ neogit.setup {
   -- Show relative date by default. When set, use `strftime` to display dates
   commit_date_format = nil,
   log_date_format = nil,
-  -- When set, used to format the diff.
+  -- When set, used to format the diff. Requires *baleia* to colorize text with ANSI escape sequences. An example for *Delta* is `{ 'delta', '--width', '117' }`. It's recommended to set `disable_context_highlighting = true`, otherwise when the cursor is in the hunk, we lose background highlighting
   log_pager = nil,
   -- Used to generate URL's for branch popup action "pull request".
   git_services = {