Refactor: Removed duplicated opt; improve clarity with description

init.lua

@@ -119,7 +119,7 @@ vim.schedule(function() vim.o.clipboard = 'unnamedplus' end)
 -- Enable break indent
 vim.o.breakindent = true
 
--- Save undo history
+-- Enable undo/redo changes even after closing and reopening a file
 vim.o.undofile = true
 
 -- Case-insensitive searching UNLESS \C or one or more capital letters in the search term
@@ -164,9 +164,6 @@ vim.o.scrolloff = 10
 -- See `:help 'confirm'`
 vim.o.confirm = true
 
--- Enable undo/redo changes even after closing and reopening a file
-vim.o.undofile = true
-
 -- Disable line wrapping
 vim.o.wrap = false