vhf/free-programming-books — pull request #690 by borgified (2014-02-09 05:57:56+00:00)
Title: fix broken url

url for
* [Clipper Tutorial: a Guide to Open Source Clipper(s)](http://en.wikibooks.org/wiki/Clipper_Tutorial:_a_Guide_to_Open_Source_Clipper(s))

was messed up