message: clarifies the documentation for dense norm computation
diff: @@ -680,7 +680,7 @@ public:
  }
  /**
  - * Computes the Euclidian (L^2) norm of this matrix.
  + * Computes the column-wise Euclidian (L^2) norm of this matrix.
  *
  * @param result a Dense row vector, used to store the norm
  * (the number of columns in the vector must match the number
  