[Bug]: [docs] Add Missing Docs for Preferred Transport and Additional Interfaces to Agent Card Documentation #842
Description
What happened?
The following fields were added to the AgentCard object
- preferredTransport
- additionalInterfaces
However, the spec docs did not include the documentation for these fields
- need to add the missing documentation
- need to add the two fields to the example AgentCard in the spec
Relevant log output
Code of Conduct
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