Addition of doc for PR in iframe card

[cnico]

Proposed change

Addition of for home-assistant/frontend#15063

Type of change

• Spelling, grammar or other readability improvements (current branch).
• Adjusted missing or incorrect information in the current documentation (current branch).
• [] Added documentation for a new integration I'm adding to Home Assistant (next branch).
  • I've opened up a PR to add logo's and icons in Brands repository.
• Added documentation for a new feature I'm adding to Home Assistant (next branch).
• Removed stale or deprecated documentation.

Additional information

• Link to parent pull request in the codebase: Allow iframe links to open on android through a parameter frontend#15063
• Link to parent pull request in the Brands repository:
• This PR fixes or closes issue: fixes #

Checklist

• This PR uses the correct branch, based on one of the following:
  • I made a change to the existing documentation and used the current branch.
  • I made a change that is related to an upcoming version of Home Assistant and used the next branch.
• The documentation follows the Home Assistant documentation standards.

[alanmilinovic]

Looks like this change is still stuck?

[frenck]

@alanmilinovic Not stuck, just the merge upstream hasn't been marked/noticed.
Will address this to get it into the right place. Thanks for the notification 👍

../Frenck

[alanmilinovic]

@alanmilinovic Not stuck, just the merge upstream hasn't been marked/noticed. Will address this to get it into the right place. Thanks for the notification 👍

../Frenck

Sounds good, tnx for all the hard work.

[frenck]

Looks good, thanks @cnico 👍