updated docs

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docs/docs/optimization.xml

@@ -325,11 +325,11 @@
                 from the Journal of Machine Learning Research:
                 <blockquote>
                     Optimized Cutting Plane Algorithm for Large-Scale Risk Minimization
-                        Vojtech Franc, Soren Sonnenburg; 10(Oct):2157--2192, 2009. 
+                      by  Vojtech Franc, Soren Sonnenburg; 10(Oct):2157--2192, 2009. 
                 </blockquote>
                 <blockquote>
                     Bundle Methods for Regularized Risk Minimization
-                        Choon Hui Teo, S.V.N. Vishwanthan, Alex J. Smola, Quoc V. Le; 11(Jan):311-365, 2010. 
+                      by Choon Hui Teo, S.V.N. Vishwanthan, Alex J. Smola, Quoc V. Le; 11(Jan):311-365, 2010. 
                 </blockquote>
 
          </description>