Rewrite tutorial section on solving linear systems
diff --git a/doc/C03_TutorialGeometry.dox b/doc/C03_TutorialGeometry.dox
index 2d3d742..e349c68 100644
--- a/doc/C03_TutorialGeometry.dox
+++ b/doc/C03_TutorialGeometry.dox
@@ -1,6 +1,6 @@
 namespace Eigen {
 
-/** \page TutorialGeometry Tutorial 2/3 - Geometry
+/** \page TutorialGeometry Tutorial 2/4 - Geometry
     \ingroup Tutorial
 
 <div class="eimainmenu">\ref index "Overview"