Fixed spelling error

--HG--
extra : convert_revision : svn%3Afdd8eb12-d10e-0410-9acb-85c331704f74/trunk%402996

dlib/svm/kcentroid_abstract.h

@@ -25,7 +25,7 @@ namespace dlib
 
             WHAT THIS OBJECT REPRESENTS
                 This object represents a weighted sum of sample points in a kernel induced
-                feature space.  It can be used to kernelized any algorithm that requires only
+                feature space.  It can be used to kernelize any algorithm that requires only
                 the ability to perform vector addition, subtraction, scalar multiplication,
                 and inner products.