(fix)typo: change kafka-broker-disk-failure display_name (#63)

Signed-off-by: ksatchit <ksatchit@mayadata.io>

charts/kafka/kafka-broker-disk-failure/kafka-broker-disk-failure.chartserviceversion.yaml

@@ -9,7 +9,7 @@ metadata:
     repository: https://github.com/litmuschaos/chaos-charts
     support: https://app.slack.com/client/T09NY5SBT/CNXNB0ZTN
 spec:
-  displayName: kafka-broker-pod-failure
+  displayName: kafka-broker-disk-failure
   categoryDescription: |
      Detaching a persistent disk from a node/instance for kafka
   keywords: