docs: add manual offset commit example#3015
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Add a short KafkaConsumer example showing manual offset commits with TopicPartition and OffsetAndMetadata. Clarifies that you should commit the next offset to consume (e.g. commit message.offset + 1).
Quick example:
from kafka import KafkaConsumer, OffsetAndMetadata, TopicPartition
consumer = KafkaConsumer('my-topic', group_id='g', enable_auto_commit=False)
for msg in consumer:
process_message(msg)
tp = TopicPartition(msg.topic, msg.partition)
consumer.commit({tp: OffsetAndMetadata(msg.offset + 1, '', -1)})