Wrote resizing documentation page

libeigen/eigen!2110

Co-authored-by: Simon Merkle <st172506@stud.uni-stuttgart.de>

doc/Manual.dox

@@ -35,7 +35,6 @@ namespace Eigen {
 */
 
 /** \page UnclassifiedPages Unclassified pages
-  - \subpage TopicResizing
   - \subpage TopicVectorization
   - \subpage TopicEigenExpressionTemplates
   - \subpage TopicScalarTypes
@@ -70,6 +69,8 @@ namespace Eigen {
     \ingroup DenseMatrixManipulation_chapter */
 /** \addtogroup TutorialReshape
     \ingroup DenseMatrixManipulation_chapter */
+/** \addtogroup TopicResizing
+    \ingroup DenseMatrixManipulation_chapter */
 /** \addtogroup TutorialSTL
     \ingroup DenseMatrixManipulation_chapter */
 /** \addtogroup TutorialMapClass