Adds in books to AI section (#5833)

* Update free-programming-books-subjects.md

Adds in a free AI book

* Update free-programming-books-subjects.md

* Update free-programming-books-subjects.md

Author: kree666

books/free-programming-books-subjects.md

@@ -122,7 +122,9 @@ Books that cover a specific programming language can be found in the  [BY PROGRA
 
 ### Artificial Intelligence
 
+* [Artificial Intelligence for a Better Future: An Ecosystem Perspective on the Ethics of AI and Emerging Digital Technologies](https://link.springer.com/book/10.1007/978-3-030-69978-9) - Bernd Carsten Stahl (PDF)
 * [Introduction to Autonomous Robots](https://github.com/correll/Introduction-to-Autonomous-Robots/releases) - Nikolaus Correll (PDF)
+* [On the Path to AI: Law’s prophecies and the conceptual foundations of the machine learning age](https://link.springer.com/book/10.1007/978-3-030-43582-0) - Thomas D. Grant, Damon J. Wischik (PDF)
 * [The Quest for Artificial Intelligence: A History of Ideas and Achievements](http://ai.stanford.edu/~nilsson/QAI/qai.pdf) - Nils J. Nilsson (PDF)