Fix broken link (#5444)

* Fix broken link

The following two books are moved to another location:
* Compiler Design: Theory, Tools, and Examples, C/C++ Edition
* Compiler Design: Theory, Tools, and Examples, Java Edition

* Fix lint error

Add file format after author.

books/free-programming-books.md

@@ -405,8 +405,8 @@
 * [An Introduction to GCC](https://web.archive.org/web/20170326232435/http://www.network-theory.co.uk/docs/gccintro/index.html) - Brian Gough
 * [Basics of Compiler Design (Anniversary Edition)](http://www.diku.dk/~torbenm/Basics/) - Torben Mogensen
 * [Compiler Design in C (1990)](http://www.holub.com/software/compiler.design.in.c.html) - Allen Holub, Prentice Hall
-* [Compiler Design: Theory, Tools, and Examples, C/C++ Edition](http://elvis.rowan.edu/~bergmann/books/cd/c_cpp/) - Seth D. Bergmann
-* [Compiler Design: Theory, Tools, and Examples, Java Edition](http://elvis.rowan.edu/~bergmann/books/cd/java/) - Seth D. Bergmann
+* [Compiler Design: Theory, Tools, and Examples, C/C++ Edition](http://elvis.rowan.edu/~bergmann/books/Compiler_Design/c_cpp/Text/C_CppEd.pdf) - Seth D. Bergmann (PDF)
+* [Compiler Design: Theory, Tools, and Examples, Java Edition](http://elvis.rowan.edu/~bergmann/books/Compiler_Design/java/CompilerDesignBook.pdf) - Seth D. Bergmann (PDF)
 * [Compiling Scala for the Java Virtual Machine](http://lampwww.epfl.ch/~schinz/thesis-final-A4.pdf) - Michel Schinz (PDF)
 * [Compiling Techniques (1969)](http://www.chilton-computing.org.uk/acl/literature/books/compilingtechniques/overview.htm) - F.R.A. Hopgood, Macdonald
 * [Crafting Interpreters (:construction:)](http://www.craftinginterpreters.com) - Bob Nystrom (HTML)