Update 23rd-overture-workshop.md

Author: kgpierce

_workshops/23rd-overture-workshop.md

@@ -32,7 +32,7 @@ incorporating the
 
 13:30-14:00 **Mennatullah Khedr** and John Fitzgerald The Composition of Digital Twins for Systems-of-Systems: a Systematic Literature Review [[paper](https://www.overturetool.org/workshops/23/ovt-23_paper_2.pdf); [slides]]
 
-14:00-14:30 **John Fitzgerald**, Peter Gorm Larsen, and Claudio Gomes Introductory Courses on Digital Twins: an Experience Report: (https://www.overturetool.org/workshops/23/ovt-23_paper_7.pdf); [slides]]
+14:00-14:30 **John Fitzgerald**, Peter Gorm Larsen, and Claudio Gomes Introductory Courses on Digital Twins: an Experience Report: [[paper](https://www.overturetool.org/workshops/23/ovt-23_paper_7.pdf); [slides]]
 
 14:30-15:00 Anders Jensen and Giuseppe Abbiati: A flexible finite element tool for digital twin services [[paper](https://www.overturetool.org/workshops/23/ovt-23_paper_6.pdf); [slides]]