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Issue description:

An instructor in the community raised a problem in DO288.

Glaring mistake in DO288 v4.18 (3rd Ed)

I haven't taught DO288 in a while (the last class was using DO288-OCP4.12-en-4-20240304) 

Going through the current Student Guide (DO288-RHOCP4.18-en-3-20250912) now as I've a class next week.

A heads-up on Page 339  => there's a diagram of Helm client <--> Helm Tiller 

This is a mistake. Tiller was removed in Helm 3
Helm 4 has just been released

The earlier Student Guides (v4.12) did not have that diagram. 
Just remove the diagram, and all would be good! 

Steps to reproduce:

Workaround:

Expected result: