Raspberry Pi and bit.ly (EbookFoundation#2769)

* Fix Raspberry Pi books

* Fix bit.ly links

free-programming-books.md

@@ -491,7 +491,7 @@
 * [Getting Real](http://gettingreal.37signals.com)
 * [Getting Started with Unity 5](https://www.packtpub.com/packt/free-ebook/getting-started-with-unity) - Dr. Edward Lavieri, Packt. (Just fill the fields with any values)
 * [Hacknot: Essays on Software Development](http://www.lulu.com/shop/ed-johnson/hacknot-essays-on-software-development/ebook/product-17544641.html) - Ed Johnson
-* [High-Performance Scientific Computing](http://bit.ly/hpc12) (class lectures and slides)
+* [High-Performance Scientific Computing](https://andreask.cs.illinois.edu/Teaching/HPCFall2012) (class lectures and slides)
 * [How Computers Work](http://www.fastchip.net/howcomputerswork/p1.html) - R. Young
 * [How to Become a Programmer](http://softwarebyrob.wpengine.netdna-cdn.com/assets/Software_by_Rob%20_How_to_Become_a%20_Programmer_1.0.pdf) (PDF)
 * [How to Think Like a Computer Scientist](http://openbookproject.net/thinkcs/) - Peter Wentworth, Jeffrey Elkner, Allen B. Downey, and Chris Meyers
@@ -601,7 +601,7 @@
 
 * [High Performance Computing](http://cnx.org/contents/bb821554-7f76-44b1-89e7-8a2a759d1347%405.2) - Charles Severance & Kevin Dowd (PDF, ePUB)
 * [High Performance Computing Training](https://computing.llnl.gov/?set=training&page=index) (LLNL materials)
-* [High-Performance Scientific Computing](http://bit.ly/hpc12) (class lectures and slides)
+* [High-Performance Scientific Computing](https://andreask.cs.illinois.edu/Teaching/HPCFall2012) (class lectures and slides)
 * [Introduction to High-Performance Scientific Computing](http://pages.tacc.utexas.edu/~eijkhout/istc/istc.html) - Victor Eijkhout
 * [Introduction to Parallel Computing](https://computing.llnl.gov/tutorials/parallel_comp/) - Blaise Barney
 * [Is Parallel Programming Hard, And, If So, What Can You Do About It?](https://www.kernel.org/pub/linux/kernel/people/paulmck/perfbook/perfbook.html) - Paul E. McKenney
@@ -2049,9 +2049,9 @@ For resources on Angular, Backbone, D3, Dojo, Ember, Express, jQuery, Knockout,
 
 ### Raspberry Pi
 
-* [Raspberry Pi Cookbook for Python Programmers](https://www.packtpub.com/packt/free-ebook/python-raspberry-pi-cookbook) - Tim Cox, Packt. *(Just fill the fields with any values)*
-* [Raspberry Pi: Measure, Record, Explore](https://leanpub.com/RPiMRE/read) - Malcolm Maclean
-* [Raspberry Pi Users Guide](http://www.cs.unca.edu/~bruce/Fall14/360/RPiUsersGuide.pdf) - Eben Upton (PDF)
+* [Raspberry Pi Cookbook for Python Programmers](https://www.packtpub.com/packt/free-ebook/python-raspberry-pi-cookbook) - Tim Cox, Packt. (PDF) *(Just fill the fields with any values)*
+* [Raspberry Pi: Measure, Record, Explore](https://leanpub.com/RPiMRE/read) - Malcolm Maclean (HTML)
+* [Raspberry Pi Users Guide - (2012)](http://www.cs.unca.edu/~bruce/Fall14/360/RPiUsersGuide.pdf) - Eben Upton (PDF)
 * [The Official Raspberry Pi Project Book](https://www.raspberrypi.org/magpi-issues/Projects_Book_v1.pdf) (PDF)