Update README.md

README.md

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-## Project Introduction
-The project gathers high-quality e-book repositories from GitHub and leverages  [MinerU 2.0](https://github.com/opendatalab/MinerU) to transform the PDF content into Markdown format.
-
-Each directory represents a repository originally hosted on GitHub.
-
-If you possess any high-quality e-book resources that require conversion, you’re welcome to submit the links in an issue and we will assist with the PDF-to-Markdown extraction.
-
-Our goal is to convert more high-quality knowledge data into AI-ready data.
-
-## Output File Structure Documentation (Based on MinerU2 vlm, [Output File Structure](https://github.com/opendatalab/MinerU/blob/master/docs/output_file_en_us.md))
-
-
-### 1. Markdown Files and Images
-- **File Type**: `.md` file + `images/` folder
-- **Description**: Final result of PDF to Markdown conversion
-- **Content**: Document text content and image references
-
-### 2. Model Output File
-- **Filename**: `model_output.txt`
-- **Description**: Intermediate inference data from VLM model
-- **Content**: Model's visual understanding results of pages
-
-### 3. Intermediate Processing File
-- **Filename**: `middle.json`
-- **Description**: Processed result from `model_output.txt`
-- **Content**: Contains position information of text, images, formulas, tables, etc. in PDF
-
-### 4. Content List File
-- **Filename**: `content_list.json`
-- **Description**: Final result converted from `middle.json`
-- **Content**: Document conversion results segmented by elements, including page information
+Project repo: https://github.com/OpenDataLab/awesome-markdown-ebooks