[Doc] Debezium User Guide should provide example of DB connector yaml and deployment instructions

The Debezium User Guide provides sections for configuring each DB connector, however this is done using the JSON format. Each section should be updated to show examples of the yaml format as this is the recommended approach for deployment.

MySQL:
https://access.redhat.com/documentation/en-us/red_hat_integration/2020-04/html-single/debezium_user_guide/index#configure-the-mysql-connector_cdc

PostGres:
https://access.redhat.com/documentation/en-us/red_hat_integration/2020-04/html-single/debezium_user_guide/index#example-configuration

MongoDB:
https://access.redhat.com/documentation/en-us/red_hat_integration/2020-04/html-single/debezium_user_guide/index#mongodb-example-configuration

SQLServer:
https://access.redhat.com/documentation/en-us/red_hat_integration/2020-04/html-single/debezium_user_guide/index#sqlserver-example-configuration

Each section should also provide instructions for deploying the yaml to the OpenShift cluster.

As reference, the Debezium Getting Started Guide currently has an example of deploying the connector configuration in yaml format:
https://access.redhat.com/documentation/en-us/red_hat_integration/2020-04/html/getting_started_with_debezium/creating-connector-monitor-inventory-database

The User Guide sections above should be updated to provide consistency in the deployment method.