Fixed readme description.

Author: arytmetyk

README.md

@@ -80,7 +80,7 @@ This is a collection of algorithms and data structures which I've implement over
   + using only shifts
   + using logarithms
   + [Fast Fourier Transform](src/com/jwetherell/algorithms/mathematics/FastFourierTransform.java)
-* [Exponentiation] (src/com/jwetherell/algorithms/mathematics/Exponentiation.java)
+* [Exponentiation](src/com/jwetherell/algorithms/mathematics/Exponentiation.java)
   + recursive exponentiation
   + fast recursive exponentiation
   + fast modular recursive exponentiation