add front matter

Author: nicecui

docs/user-guide/ingest-data/for-iot/kafka.md

@@ -1,3 +1,8 @@
+---
+keywords: [Kafka, Data Ingestion]
+description: Write data from Kafka to GreptimeDB.
+---
+
 # Kafka
 
 Please refer to the [Kafka documentation](/user-guide/ingest-data/for-observerbility/kafka.md) for instructions on how to ingest data from Kafka into GreptimeDB.

i18n/zh/docusaurus-plugin-content-docs/current/user-guide/ingest-data/for-iot/kafka.md

@@ -1,3 +1,8 @@
+---
+keywords: [Kafka, 数据写入]
+description: 将数据从 Kafka 写入到 GreptimeDB.
+---
+
 # Kafka
 
 请参考 [Kafka 文档](/user-guide/ingest-data/for-observerbility/kafka.md)了解如何将数据从 Kafka 写入到 GreptimeDB。