fix the README

README.md

@@ -115,52 +115,87 @@ bbook --book_name test_books/animal_farm.epub --openai_key ${openai_key} --test
 ## Params
 
 - `--test`:
+
   Use `--test` option to preview the result if you haven't paid for the service. Note that there is a limit and it may take some time.
+
 - `--language`:
+
   Set the target language like `--language "Simplified Chinese"`. Default target language is `"Simplified Chinese"`.
   Read available languages by helper message: `python make_book.py --help`
 - `--proxy`:
+
   Use `--proxy` option to specify proxy server for internet access. Enter a string such as `http://127.0.0.1:7890`.
 - `--resume`:
+
   Use `--resume` option to manually resume the process after an interruption.
+
 - `--translate-tags`:
+
   epub is made of html files. By default, we only translate contents in `<p>`.
   Use `--translate-tags` to specify tags need for translation. Use comma to separate multiple tags.
   For example: `--translate-tags h1,h2,h3,p,div`
+
 - `--book_from`:
+
   Use `--book_from` option to specify e-reader type (Now only `kobo` is available), and use `--device_path` to specify the mounting point.
+
 - `--api_base`:
+
   If you want to change api_base like using Cloudflare Workers, use `--api_base <URL>` to support it.
-  **Note: the api url should be '`https://xxxx/v1`'. Quotation marks are required.** -`--allow_navigable_strings`: If you want to translate strings in an e-book that aren't labeled with any tags, you can use the `--allow_navigable_strings` parameter. This will add the strings to the translation queue. **Note that it's best to look for e-books that are more standardized if possible.**
+  **Note: the api url should be '`https://xxxx/v1`'. Quotation marks are required.**
+
+- `--allow_navigable_strings`:
+
+  If you want to translate strings in an e-book that aren't labeled with any tags, you can use the `--allow_navigable_strings` parameter. This will add the strings to the translation queue. **Note that it's best to look for e-books that are more standardized if possible.**
+
 - `--prompt`:
+
   To tweak the prompt, use the `--prompt` parameter. Valid placeholders for the `user` role template include `{text}` and `{language}`. It supports a few ways to configure the prompt:
   - If you don't need to set the `system` role content, you can simply set it up like this: `--prompt "Translate {text} to {language}."` or `--prompt prompt_template_sample.txt` (example of a text file can be found at [./prompt_template_sample.txt](./prompt_template_sample.txt)).
   - If you need to set the `system` role content, you can use the following format: `--prompt '{"user":"Translate {text} to {language}", "system": "You are a professional translator."}'` or `--prompt prompt_template_sample.json` (example of a JSON file can be found at [./prompt_template_sample.json](./prompt_template_sample.json)).
   - You can also set the `user` and `system` role prompt by setting environment variables: `BBM_CHATGPTAPI_USER_MSG_TEMPLATE` and `BBM_CHATGPTAPI_SYS_MSG`.
+
 - `--batch_size`:
+
   Use the `--batch_size` parameter to specify the number of lines for batch translation (default is 10, currently only effective for txt files).
+
 - `--accumulated_num`:
+
   Wait for how many tokens have been accumulated before starting the translation. gpt3.5 limits the total_token to 4090. For example, if you use --accumulated_num 1600, maybe openai will output 2200 tokens and maybe 200 tokens for other messages in the system messages user messages, 1600+2200+200=4000, So you are close to reaching the limit. You have to choose your own
   value, there is no way to know if the limit is reached before sending
+
 - `--use_context`:
+
   prompts the model to create a three-paragraph summary. If it's the beginning of the translation, it will summarize the entire passage sent (the size depending on `--accumulated_num`).
   For subsequent passages, it will amend the summary to include details from the most recent passage, creating a running one-paragraph context payload of the important details of the entire translated work. This improves consistency of flow and tone throughout the translation. This option is available for all ChatGPT-compatible models and Gemini models.
-- `--context_paragraph_limit`: Use `--context_paragraph_limit` to set a limit on the number of context paragraphs when using the `--use_context` option.
+
+- `--context_paragraph_limit`:
+  Use `--context_paragraph_limit` to set a limit on the number of context paragraphs when using the `--use_context` option.
+
 - `--temperature`:
+
   Use `--temperature` to set the temperature parameter for `chatgptapi`/`gpt4`/`claude` models.
   For example: `--temperature 0.7`.
+
 - `--block_size`:
+
   Use `--block_size` to merge multiple paragraphs into one block. This may increase accuracy and speed up the process but can disturb the original format. Must be used with `--single_translate`.
   For example: `--block_size 5`.
+
 - `--single_translate`:
+
   Use `--single_translate` to output only the translated book without creating a bilingual version.
+
 - `--translation_style`:
+
   example: `--translation_style "color: #808080; font-style: italic;"`
+
 - `--retranslate`:
+
   `--retranslate "$translated_filepath" "file_name_in_epub" "start_str" "end_str"(optional)`<br>
-  Retranslate from start_str to end_str's tag:
+  - Retranslate from start_str to end_str's tag:
   `python3 "make_book.py" --book_name "test_books/animal_farm.epub" --retranslate 'test_books/animal_farm_bilingual.epub' 'index_split_002.html' 'in spite of the present book shortage which' 'This kind of thing is not a good symptom. Obviously'`<br>
-  Retranslate start_str's tag:
+  - Retranslate start_str's tag:
   `python3 "make_book.py" --book_name "test_books/animal_farm.epub" --retranslate 'test_books/animal_farm_bilingual.epub' 'index_split_002.html' 'in spite of the present book shortage which'`
 
 ### Examples