Various documentation updates:
- update the tutorial
- update doc of deprecated cwise function
- update cwise doc snippets
diff --git a/doc/snippets/MatrixBase_rowwise.cpp b/doc/snippets/MatrixBase_rowwise.cpp
index 2205465..ae93964 100644
--- a/doc/snippets/MatrixBase_rowwise.cpp
+++ b/doc/snippets/MatrixBase_rowwise.cpp
@@ -2,4 +2,4 @@
 cout << "Here is the matrix m:" << endl << m << endl;
 cout << "Here is the sum of each row:" << endl << m.rowwise().sum() << endl;
 cout << "Here is the maximum absolute value of each row:"
-     << endl << m.cwise().abs().rowwise().maxCoeff() << endl;
+     << endl << m.cwiseAbs().rowwise().maxCoeff() << endl;