MINOR: Fix typo in upgrade docs
Reviewers: Mickael Maison Luke Chen
caused by hardware failure. Users need to monitor the per-broker metric <code>offlineLogDirectoryCount</code> to check
whether there is offline log directory. </li>
<li>Added KafkaStorageException which is a retriable exception. KafkaStorageException will be converted to NotLeaderForPartitionException in the response
- if the version of client's FetchRequest or ProducerRequest does not support KafkaStorageException. </li>
+ if the version of the client's FetchRequest or ProducerRequest does not support KafkaStorageException. </li>
<li>-XX:+DisableExplicitGC was replaced by -XX:+ExplicitGCInvokesConcurrent in the default JVM settings. This helps
avoid out of memory exceptions during allocation of native memory by direct buffers in some cases.</li>
<li>The overridden <code>handleError</code> method implementations have been removed from the following deprecated classes in
