Update DESCRIPTION

CRAN: Please enclose URLs in angle brackets (<...>).

Author: wush978

DESCRIPTION

@@ -13,7 +13,7 @@ Description: Feature hashing, also called as the hashing trick, is a method to t
   it applies a hash function to the features and uses their hash values as indices directly.
   The method of feature hashing in this package was proposed in Weinberger et al. (2009) <arXiv:0902.2206>. 
   The hashing algorithm is the murmurhash3 from the 'digest' package. 
-  Please see the README in https://github.com/wush978/FeatureHashing for more information.
+  Please see the README in <https://github.com/wush978/FeatureHashing> for more information.
 License: GPL(>= 3) | file LICENSE
 Depends: 
   R (>= 3.1),