[FLINK-29920][docs] Minor reformat Kafka connector documentation (#21253)
diff --git a/docs/content.zh/docs/connectors/table/kafka.md b/docs/content.zh/docs/connectors/table/kafka.md
index 4455d7a..b57da40 100644
--- a/docs/content.zh/docs/connectors/table/kafka.md
+++ b/docs/content.zh/docs/connectors/table/kafka.md
@@ -471,13 +471,12 @@
### 起始消费位点
`scan.startup.mode` 配置项决定了 Kafka consumer 的启动模式。有效值为：
-<ul>
-<li><span markdown="span">`group-offsets`</span>：从 Zookeeper/Kafka 中某个指定的消费组已提交的偏移量开始。</li>
-<li><span markdown="span">`earliest-offset`</span>：从可能的最早偏移量开始。</li>
-<li><span markdown="span">`latest-offset`</span>：从最末尾偏移量开始。</li>
-<li><span markdown="span">`timestamp`</span>：从用户为每个 partition 指定的时间戳开始。</li>
-<li><span markdown="span">`specific-offsets`</span>：从用户为每个 partition 指定的偏移量开始。</li>
-</ul>
+
+* `group-offsets`：从 Zookeeper/Kafka 中某个指定的消费组已提交的偏移量开始。
+* `earliest-offset`：从可能的最早偏移量开始。
+* `latest-offset`：从最末尾偏移量开始。
+* `timestamp`：从用户为每个 partition 指定的时间戳开始。
+* `specific-offsets`：从用户为每个 partition 指定的偏移量开始。
默认值 `group-offsets` 表示从 Zookeeper/Kafka 中最近一次已提交的偏移量开始消费。
diff --git a/docs/content/docs/connectors/table/kafka.md b/docs/content/docs/connectors/table/kafka.md
index eb4bc4d..a5d8598 100644
--- a/docs/content/docs/connectors/table/kafka.md
+++ b/docs/content/docs/connectors/table/kafka.md
@@ -521,13 +521,12 @@
### Start Reading Position
The config option `scan.startup.mode` specifies the startup mode for Kafka consumer. The valid enumerations are:
-<ul>
-<li><span markdown="span">`group-offsets`</span>: start from committed offsets in ZK / Kafka brokers of a specific consumer group.</li>
-<li><span markdown="span">`earliest-offset`</span>: start from the earliest offset possible.</li>
-<li><span markdown="span">`latest-offset`</span>: start from the latest offset.</li>
-<li><span markdown="span">`timestamp`</span>: start from user-supplied timestamp for each partition.</li>
-<li><span markdown="span">`specific-offsets`</span>: start from user-supplied specific offsets for each partition.</li>
-</ul>
+
+* `group-offsets`: start from committed offsets in ZK / Kafka brokers of a specific consumer group.
+* `earliest-offset`: start from the earliest offset possible.
+* `latest-offset`: start from the latest offset.
+* `timestamp`: start from user-supplied timestamp for each partition.
+* `specific-offsets`: start from user-supplied specific offsets for each partition.
The default option value is `group-offsets` which indicates to consume from last committed offsets in ZK / Kafka brokers.
