[Task] <In the Documentation Contribution Guidelines, add the Documentation Writing Guidelines>

### Description

Nowadays, there is no standardization of document writing, we can use [Docs]https://github.com/ruanyf/document-style-guide] as a guide to standardize the use of documents.

@tomsun28 @zhangshenghang @zqr10159, how do you think?

### Task List

_No response_

No file, test, or documentation entry point is named. Locate the Documentation Contribution Guidelines, review the linked documentation style guide, and determine how its writing guidance should be incorporated; done means the contribution guidelines include the agreed writing standards.

Written by the indexing model from the issue text.