doc: clarify license section and add contributor note

Author: Madhu696969

README.md

@@ -901,16 +901,19 @@ releases on a rotation basis as outlined in the
 
 ## License
 
-Node.js is available under the
-[MIT License](https://opensource.org/licenses/MIT). Node.js also includes
-external libraries that are available under a variety of licenses.  See
-[LICENSE](https://github.com/nodejs/node/blob/HEAD/LICENSE) for the full
-license text.
+Node.js is licensed under the [MIT License](https://opensource.org/licenses/MIT).
 
-[Code of Conduct]: https://github.com/nodejs/admin/blob/HEAD/CODE_OF_CONDUCT.md
+This project also depends on external libraries that may use different open-source licenses.  
+For a complete list of included licenses, please see the [LICENSE](https://github.com/nodejs/node/blob/HEAD/LICENSE) file in this repository.
+
+If you are contributing documentation or source changes, please ensure your additions comply with the existing license terms.
+
+---
+
+[Code of Conduct]: https://github.com/nodejs/admin/blob/HEAD/CODE_OF_CONDUCT.md  
 [Contributing to the project]: CONTRIBUTING.md
 [Node.js website]: https://nodejs.org/
 [OpenJS Foundation]: https://openjsf.org/
 [Strategic initiatives]: doc/contributing/strategic-initiatives.md
-[Technical values and prioritization]: doc/contributing/technical-values.md
+[Technical values and prioritization]: doc/contributing/technical-values.md 
 [Working Groups]: https://github.com/nodejs/TSC/blob/HEAD/WORKING_GROUPS.md