Set nvim's scrolloff to '8'

This keeps a bit of space around the cursor and the screen borders
when scrolling.

private_dot_config/nvim/init.lua

@@ -32,6 +32,9 @@ vim.opt.mouse = ''
 
 vim.g.mapleader = " "
 
+-- Always show 8 lines above or below the cursor when scrolling.
+vim.opt.scrolloff = 8
+
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 -- Filetype configurations
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