doc: add `added:` information for readline
Checklist
-
documentation is changed or added -
the commit message follows commit guidelines
Affected core subsystem(s)
doc, readline
Description of change
Add added:
information for readline module.
Got the information from git history, I added the version when Interface was exported as class (v0.1.104), it was an internal class on previous versions.
Ref: #6578 (closed)