nearly complete page 6 / linear algebra + examples

fix the previous/next links

doc/C05_TutorialAdvancedInitialization.dox

@@ -1,8 +1,11 @@
 namespace Eigen {
 
-/** \page TutorialAdvancedInitialization Tutorial - Advanced initialization
+/** \page TutorialAdvancedInitialization Tutorial page 5 - Advanced initialization
     \ingroup Tutorial
 
+\li \b Previous: \ref TutorialBlockOperations
+\li \b Next: \ref TutorialLinearAlgebra
+
 \section TutorialMatrixArithmCommaInitializer Comma initializer
 
 Eigen offers a comma initializer syntax which allows to set all the coefficients
@@ -24,6 +27,8 @@ TODO mention using the comma initializer to fill a block xpr like m.row(i) << 1,
 
 TODO add more sections about Identity(), Zero(), Constant(), Random(), LinSpaced().
 
+\li \b Next: \ref TutorialLinearAlgebra
+
 */
 
 }