Merge branch 'mark--tu-dresden.de-preview-patch-71238' into 'preview'

folienupdate

See merge request !857

doc.zih.tu-dresden.de/docs/index.md

@@ -42,7 +42,7 @@ We offer a rich and colorful bouquet of courses from classical *HPC introduction
 [Training Offers](https://tu-dresden.de/zih/hochleistungsrechnen/nhr-training)
 for a detailed overview of the courses and the respective dates at ZIH.
 
-* [HPC introduction slides](misc/HPC-Introduction.pdf) (Nov. 2022)
+* [HPC introduction slides](misc/HPC-Introduction.pdf) Sep. 2023)
 
 Furthermore, Center for Scalable Data Analytics and Artificial Intelligence
 [ScaDS.AI](https://scads.ai) Dresden/Leipzig offers various trainings with HPC focus.