docs: update README.md

Author: wu-vincent

README.md

@@ -1,6 +1,6 @@
 # Endstone Python Example Plugin
 
-Welcome to the Example Python plugin for Endstone servers.
+Welcome to the example Python plugin for Endstone servers.
 
 ## Prerequisites
 
@@ -11,15 +11,15 @@ Welcome to the Example Python plugin for Endstone servers.
 
 ```
 python-example-plugin/ 
-├── src/                                    # Main source directory 
-│   └── endstone_python_example_plugin/     # Directory for the plugin package 
-│       ├── __init__.py                     # Initializer for the package, importing ExamplePlugin class from example_plugin.py
-│       ├── example_plugin.py               # Implementation of ExamplePlugin class
-│       └── python_command.py               # Custom command executor for /python
-├── .gitignore                              # Git ignore rules
-├── LICENSE                                 # License details
-├── README.md                               # This file
-└── pyproject.toml                          # Plugin configuration file which specifies the entrypoint
+├── src/                             # Main source directory 
+│   └── endstone_example_plugin/     # Directory for the plugin package 
+│       ├── __init__.py              # Initializer for the package, importing ExamplePlugin class from example_plugin.py
+│       ├── example_plugin.py        # Implementation of ExamplePlugin class
+│       └── python_command.py        # Custom command executor for /python
+├── .gitignore                       # Git ignore rules
+├── LICENSE                          # License details
+├── README.md                        # This file
+└── pyproject.toml                   # Plugin configuration file which specifies the entrypoint
 ```
 
 ## Getting Started
@@ -62,6 +62,11 @@ python-example-plugin/
     - [Using TestPyPI](https://packaging.python.org/en/latest/guides/using-testpypi/)
     - [Publishing package distribution releases using GitHub Actions CI/CD workflows](https://packaging.python.org/en/latest/guides/publishing-package-distribution-releases-using-github-actions-ci-cd-workflows/)
 
+## Documentation
+
+For a deeper dive into the Endstone API and its functionalities, refer to the main
+Endstone [documentation](https://endstone.readthedocs.io) (WIP).
+
 ## License
 
 This project is licensed under the MIT License - see the [LICENSE](LICENSE) file for details.