Fix finalize Algorithms & Data Structures section (fully alphabetized)

Author: Colm Woods

books/free-programming-books-subjects.md

@@ -105,8 +105,8 @@ Books that cover a specific programming language can be found in the [BY PROGRAM
 * [Algorithms and Automatic Computing Machines (1963)](https://archive.org/details/Algorithms_And_Automatic_Computing_Machines) - B. A. Trakhtenbrot
 * [Algorithms and Complexity](https://www.math.upenn.edu/~wilf/AlgoComp.pdf) - Herbert S. Wilf (PDF)
 * [Algorithms and Data Structures](https://textbookequity.org/Textbooks/Nievergelt_Algorithms%20and%20Data%20Structures08.pdf) - Jürg Nievergelt, Klaus Hinrichs (PDF)
-* [Algorithms Course Materials](https://jeffe.cs.illinois.edu/teaching/algorithms/) - Jeff Erickson
 * [Algorithms for Decision Making](https://algorithmsbook.com) - Mykel J. Kochenderfer, Tim A. Wheeler, Kyle H. Wray (HTML, PDF) (CC BY-NC-ND)
+* [Algorithms Course Materials](https://jeffe.cs.illinois.edu/teaching/algorithms/) - Jeff Erickson
 * [Algorithms Notes for Professionals](https://goalkicker.com/AlgorithmsBook) - Compiled from StackOverflow Documentation (PDF)
 * [Algorithms, 4th Edition](https://algs4.cs.princeton.edu/home/) - Robert Sedgewick, Kevin Wayne
 * [An Open Guide to Data Structures and Algorithms](https://open.umn.edu/opentextbooks/textbooks/an-open-guide-to-data-structures-and-algorithms) - Paul W. Bible, Lucas Moser (PDF)