Fixed the stackoverflow link in README

Author: svaksha

README.md

@@ -109,7 +109,7 @@ If you would like to run the IPython notebooks locally, (option 1. above), you'l
    -  For Linux/OSX users, you should not have a problem installing the above, [*except for Matplotlib on OSX*](http://www.penandpants.com/2012/02/24/install-python/).
    -  For Windows users, check out [pre-compiled versions](http://www.lfd.uci.edu/~gohlke/pythonlibs/) if you have difficulty. 
    - also recommended, for data-mining exercises, are [PRAW](https://github.com/praw-dev/praw) and [requests](https://github.com/kennethreitz/requests). 
-- New to Python or IPython, and help with the namespaces? Check out (this answer)[http://stackoverflow.com/questions/12987624/confusion-between-numpy-scipy-matplotlib-and-pylab]. 
+- New to Python or IPython, and help with the namespaces? Check out [this answer](http://stackoverflow.com/questions/12987624/confusion-between-numpy-scipy-matplotlib-and-pylab). 
 
 -  In the styles/ directory are a number of files that are customized for the notebook. 
 These are not only designed for the book, but they offer many improvements over the