Upgrade process from Red Hat 3scale API Managament On-premises version 2.3 to 2.4 has incorrect references

Issue

Lately I have upgraded from 2.3 to 2.4 using the "Migrating 3scale API Management 2.3 to 2.4" section in the 3scale 2.4 On-premises Documentation.

It has following problems:

1. Patching memcached:

   oc patch dc/system-memcache --patch='{"spec":{"template":{"spec":{"containers":[{"name": "memcache", "image":"registry.access.redhat.com/3scale-amp20/memcached:1.4.15-15"}]}}}}'`
   

   Should be like this:

   `oc patch dc/system-memcache --patch='{"spec":{"template":{"spec":{"containers":[{"name": "memcache", "image":"registry.access.redhat.com/3scale-amp20/memcached"}]}}}}'`
   

2. After upgrade there is not instructions to patch AMP_RELEASE variable to 2.4.0.