[ZRH-2025] Update workshops

Author: romanoroth

content/events/2025-zurich/program/alina-liburkina.md

@@ -22,7 +22,7 @@ Once tests are in place, we’ll explore how to clean up the internal mess. Lear
 We’ll introduce effective automated and manual refactoring techniques to methodically restructure code while keeping everything operational. Finally, we will show techniques that can guide you toward a more flexible architecture, like Vertical Slice and Hexagonal Architecture, where each feature slice is more testable, maintainable, and easy to evolve.
 
 <strong>Prerequisites for this workshop:</strong>
-No prerequisites needed.
+- There are no prerequirements for this workshop.
 
 <strong>Number of participants:</strong>
 The maximum number of participants at this workshop is 40.

content/events/2025-zurich/program/alvaro-revuelta-m.md

@@ -35,7 +35,7 @@ We will use several tools such as Trivy for image scanning, Dive to inspect the
 The workshop will also cover strategies for continuously monitoring and updating images to maintain security over time.
 
 <strong>Prerequisites for this workshop:</strong>
-No prerequisites needed.
+- No preparation work needed
 
 <strong>Number of participants:</strong>
 The maximum number of participants at this workshop is 40.

content/events/2025-zurich/program/stefan-pezzei.md

@@ -23,7 +23,11 @@ We'll cover the essentials of deploying the OpenTelemetry Collector to process a
 Leave uncertainty behind and achieve total operational control.
 
 <strong>Prerequisites for this workshop:</strong>
-No prerequisites needed.
+- Basic knowledge of Kubernetes is required
+- A Bitbucket account with an already set up SSH key is required
+- An IDE for writing and adapting YAML files should be installed
+- Basic knowledge of ArgoCD is an advantage
+- The max number of participants is 16. 
 
 <strong>Number of participants:</strong>
 The maximum number of participants at this workshop is 32.