Final call for "iframe unique name" rule

Hi All,

This is the final call for the rule "iframe unique name" -
https://github.com/act-rules/act-rules.github.io/pull/225, which will end
on 2nd of May. If you have any objections to the rule please raise them
before this date.

*Note: We encourage proceeding with implementations during the final call
phase.*

Best
Jey