Add missing metadata table information in docs (#6309)

* Add missing metadata table information in doc file

* address review comment

docs/content/configuration/index.md

@@ -454,6 +454,8 @@ These properties specify the jdbc connection and other configuration around the
 |`druid.metadata.storage.connector.password`|The [Password Provider](../operations/password-provider.html) or String password used to connect with.|none|
 |`druid.metadata.storage.connector.createTables`|If Druid requires a table and it doesn't exist, create it?|true|
 |`druid.metadata.storage.tables.base`|The base name for tables.|druid|
+|`druid.metadata.storage.tables.dataSource`|The table to use to look for dataSources which created by [Kafka Indexing Service](../development/extensions-core/kafka-ingestion.html).|druid_dataSource|
+|`druid.metadata.storage.tables.pendingSegments`|The table to use to look for pending segments.|druid_pendingSegments|
 |`druid.metadata.storage.tables.segments`|The table to use to look for segments.|druid_segments|
 |`druid.metadata.storage.tables.rules`|The table to use to look for segment load/drop rules.|druid_rules|
 |`druid.metadata.storage.tables.config`|The table to use to look for configs.|druid_config|