Fixed typo in href of image map ImproveConceptsOverview
Fixed typo in href of image map ImproveConceptsOverview

href of pattern improve-approaches was wrong.

aim42/aim42,kitenco/aim42,aim42/aim42,feststelltaste/aim42,rschimmack/aim42,kitenco/aim42,feststelltaste/aim42,rschimmack/aim42