jarrah42 for 2024-06-18-acmrep: Update resource links

[bernhold]

• [x] "Update https://github.com/bssw-tutorial/bssw-tutorial.github.io/tree/main/2024-06-18-acmrep/presentation-resources/intro-a.md"
• [x] "Update https://github.com/bssw-tutorial/bssw-tutorial.github.io/tree/main/2024-06-18-acmrep/presentation-resources/rep-workflows.md"
• [x] "Update https://github.com/bssw-tutorial/bssw-tutorial.github.io/tree/main/2024-06-18-acmrep/presentation-resources/reproducibility.md"
• [x] "Update https://github.com/bssw-tutorial/bssw-tutorial.github.io/tree/main/2024-06-18-acmrep/presentation-resources/testing-a.md"