Rule Engine examples have small errors.

[karyware]

Page: https://docs.emqx.io/en/broker/v4.3/rule/rule-engine.html

The rule engine examples have small errors:

Example 1 The action should be $ {item.idx} and ${item.name}

Example 2 and example 3 "payload.date as date" is missing from the Do statement

The actions are easy to miss when reading the text. Maybe put the actions inside of a code block or highlight them somehow.