User Guide Documentation corrections for PostgreSQL

These are some observations based on Q3 User Guide document (chapter 3.6)

https://access.redhat.com/documentation/en-us/red_hat_integration/2020-Q3/html-single/debezium_user_guide/index#adding-debezium-postgresql-connector-

configuration-to-kafka-connect

in the inventory-connector.yaml file 

FROM is wrong in the example should be (see missing -rhel7)

registry.redhat.io/amq7/amq-streams-kafka-25-rhel7:1.5.0 

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Section 3.6.3 need to come first than 3.6.2 and 3.6.1.  It is plain confusing to have these two sections. I suggest remove, or work them into 3.6.3

Take the ending of 3.6.3 after build image into a separate section or direct users to
use s2i process as it is easier (I know that would only apply for OpenShift, as defined in getting started guide)
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3.6.2 - in inventory-connector.yaml the "lables" is wrong it should be (lines smudged into a single line)

 labels: 
   strimzi.io/cluster: my-connect-cluster

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oc logs $(oc get pods -o name -l strimzi.io/name=my-connect-cluster-connect)

should be

oc logs $(oc get pods -o name -l strimzi.io/cluster=my-connect-cluster)
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inventory-yaml has

 apiVersion: kafka.strimzi.io/v1beta1

it should be

apiVersion: kafka.strimzi.io/v1alpha1 

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Kafka Connect resource yaml requires the following annotation (at least on a default install)

apiVersion: kafka.strimzi.io/v1beta1
kind: KafkaConnectmetadata:  
annotations:    
  strimzi.io/use-connector-resources: 'true' 

it is defined in this blog
https://strimzi.io/blog/2020/01/27/deploying-debezium-with-kafkaconnector-resource/
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maybe add in `plugin.name: pgoutput` in the `inventory-connector.yaml` in the configuration or as a note for any postgresql version >= 10