Some section numbers are incorrect in Infrastructre

https://access.redhat.com/documentation/en-us/red_hat_3scale/2.2/html/infrastructure/upgrade21-22#perform_the_upgrade

1. exit the pod
1. enter the following oc patch command:

should be 5 and 6

https://access.redhat.com/documentation/en-us/red_hat_3scale/2.2/html-single/infrastructure/#backend

1.7. Patch System Components
1.8. Backend
1.8.1. Patch APIcast
1.8.2. Patch Zync components

should be:

1.7. Patch System Components
1.8. Patch Backend Components
1.9. Patch APIcast Components
1.10. Patch Zync Components