fix website 2.5.2 (apache#7081)

the website for 2.5.2 is cut from branch-2.5 and outdated with wanted code. This PR build the website based on the content of 2.5.1 to make it right.

site2/website/versioned_docs/version-2.5.2/adaptors-kafka.md

@@ -251,6 +251,7 @@ You can configure Pulsar authentication provider directly from the Kafka propert
 | [`pulsar.producer.max.pending.messages.across.partitions`](http://pulsar.apache.org/api/client/org/apache/pulsar/client/api/ProducerConfiguration.html#setMaxPendingMessagesAcrossPartitions-int-) | `50000` | Set the maximum number of pending messages across all the partitions.  |
 | [`pulsar.producer.batching.enabled`](http://pulsar.apache.org/api/client/org/apache/pulsar/client/api/ProducerConfiguration.html#setBatchingEnabled-boolean-) | `true` | Control whether automatic batching of messages is enabled for the producer. |
 | [`pulsar.producer.batching.max.messages`](http://pulsar.apache.org/api/client/org/apache/pulsar/client/api/ProducerConfiguration.html#setBatchingMaxMessages-int-) | `1000` | The maximum number of messages in a batch. |
+| [`pulsar.block.if.producer.queue.full`](http://pulsar.apache.org/api/client/org/apache/pulsar/client/api/ProducerConfiguration.html#setBlockIfQueueFull-boolean-) | | Specify the block producer if queue  is full. |
 
 
 ### Pulsar consumer Properties