vcs: Add title to exercises.rst
The title is required for it to appear in the index file of sphinx.
Programming Pearls
The C Programming Language
The Mythical Man Month: Essays on Software Engineering
Programming Pearls
The C Programming Language
Structure and Interpretation of Computer Programs
Programming Pearls
Compilers: Principles, Techniques, and Tools
The C Programming Language
The Art of UNIX Programming
Programming Pearls
The Art of Computer Programming
Introduction to Algorithms
The Art of UNIX Programming
The Pragmatic Programmer: From Journeyman to Master
Programming Pearls
Unix Power Tools
The Art of UNIX Programming