fix typos

Doc/Tutorial/11-smart_handles/smooth.cc

@@ -42,15 +42,15 @@ int main(int argc, char** argv)
       for (const auto& vh : mesh.vertices())
         laplace(vh) = vh.vertices().avg(points) - points(vh);
       
-      // Iterate over all vertices to compte update vectors as the negative of the laplace of the laplace damped by 0.5
+      // Iterate over all vertices to compute the laplace vector of the laplace vectors
       for (const auto& vh : mesh.vertices())
         bi_laplace(vh) =  (vh.vertices().avg(laplace) - laplace(vh));
       
-      // update points
+      // update points by substracting the bi-laplacian damped by a factor of 0.5
       for (const auto& vh : mesh.vertices())
         points(vh) += -0.5 * bi_laplace(vh);
     }
-  } // The laplace and update properties are removed is removed from the mesh at the end of this scope.
+  } // The laplace and update properties are removed from the mesh at the end of this scope.
   
   
   // Write mesh file