Update urls of ‘Thinking in C++’ (EbookFoundation#2722)

Michael Malura · eshellman · commit 60c81cda3d16 · 2018-02-09T15:01:29.000-05:00
The old links aren’t valid anymore
diff --git a/free-programming-books.md b/free-programming-books.md
@@ -938,7 +938,7 @@ Kerridge (PDF) (Just fill the fields with any values)
 * [The Boost C++ libraries](http://theboostcpplibraries.com)
 * [The Rook's Guide to C++](http://rooksguide.org/2013/11/26/version-1-0-is-out/) (PDF)
 * [The Ultimate Question of Programming, Refactoring, and Everything](https://www.gitbook.com/book/alexastva/the-ultimate-question-of-programming-refactoring-/details)
-* [Thinking in C++, Second Edition, Vol. 1.](http://www.mindviewinc.com/downloads/TICPP-2nd-ed-Vol-one.zip) - Bruce Eckel [(Vol. 2)](http://www.mindviewinc.com/downloads/TICPP-2nd-ed-Vol-two.zip) (ZIP)
+* [Thinking in C++, Second Edition, Vol. 1.](https://archive.org/details/TICPP2ndEdVolOne) - Bruce Eckel [(Vol. 2)](https://archive.org/details/TICPP2ndEdVolTwo)
 
 
 ### Chapel
