Identified issue: The current alert receiver section in the monitoring docs is not clear enough:

1. These to sections (sec_1, sec_2) overlap a lot:
   • This causes a lot of confusion, because we would assume that each procedure should do something different, so this definitely needs to be clarified.
   • It might be better to merge both.
2. Part of the problem is the following: we have 3 ways to configure receivers:
   1. In the OCP console:  limited because only a few receivers are supported but it's simpler for beginners (because it's only UI)
   2. Directly in the Alertmanager config
   3. For user-defined monitoring, you can also (if enabled) configure notifications with the AlertmanagerConfig custom resource.

Therefore, this issue needs enhance these existing sections more to make this distinction clear.