feat: change the files encapsulation

lua/chatgpt_nvim/init.lua

@@ -39,18 +39,11 @@ function M.run_chatgpt_command()
   local current_file_content, current_file_path = context.get_current_file()
   local readme_content = context.get_readme_content()
 
-  -- Make the prompt more readable for the O1 model:
-  -- 1. Include initial prompt and user input at the start.
-  -- 2. Provide a clear project structure section.
-  -- 3. Clearly label the files section.
-  -- 4. The file_sections already include <<<CGPT Current File blocks for each file,
-  --    we just need to ensure there's a clear intro.
-
   local sections = {
     conf.initial_prompt .. "\n" .. user_input,
     "\n\nProject Structure:\n",
     project_structure,
-    "\n\nBelow are the files from the project, each enclosed in <<<CGPT Current File ... >>> blocks for clarity.\n"
+    "\n\nBelow are the files from the project, each preceded by its filename in backticks and enclosed in triple backticks.\n"
   }
 
   table.insert(sections, file_sections)