Updated docs

docs/pandoc/lua/indent-code-blocks.lua

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+-- pandoc_indent_nix_blocks.lua
+-- This Pandoc Lua filter indents all lines in code blocks by 2 spaces
+-- TODO: This indents _all_ code blocks, not just example and default...
+
+--if dump_debug then
+--  local debug_file = io.open("pandoc_debug.log", "a")
+--end
+--
+--function debug(msg)
+--  if debug_file then
+--    debug_file:write(msg .. "\n")
+--  end
+--end
+
+function CodeBlock(block)
+  -- Check if the code block language is unmarked
+  if #block.classes == 0 then
+    -- Split the block text into lines
+    local lines = {}
+    for line in block.text:gmatch("[^\r\n]+") do
+      table.insert(lines, line)
+    end
+
+    -- Indent each line by 2 spaces
+    for i, line in ipairs(lines) do
+      lines[i] = "  " .. line
+    end
+
+    -- Join the lines back together and update the block text
+    block.text = table.concat(lines, '\n')
+
+    -- Return the modified block
+    return block
+  end
+end
+
+return {
+  {CodeBlock = CodeBlock}
+}