Add missing kafka pubsub properties

[passuied]

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Description

Add missing documentation for Kafka pubsub properties

Issue reference

#4414

[hhunter-ms]

@passuied thank you for adding these! Could you also add to the yaml example above the spec metadata table?

[passuied]

@passuied thank you for adding these! Could you also add to the yaml example above the spec metadata table?

Added examples @hhunter-ms