[SPARK-33660] Update Kafka Headers Documentation in Structured Streaming

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.0.0, 3.0.1
• Fix Version/s: 3.0.2, 3.1.0, 3.2.0
• Component/s: Documentation, Structured Streaming
• Target Version/s: 3.1.0
• Assignee: German Schiavon Matteo
• Reporter: German Schiavon Matteo
• Created: 04/Dec/20 14:52
• Updated: 15/Nov/21 18:26
• Resolved: 04/Dec/20 21:53

Description

This is to update the documentation of the Kafka Integration Guide, in particular the Headers section.

The documentation suggests to use `Map` as the type for headers but is the type is
`Array[(String, Array[Byte])]`

Issue Links

• links to: [Github] Pull Request #30605 (Gschiavon)