docs: adjust en docs format (apecloud#6760)

docs/user_docs/kubeblocks-for-kafka/cluster-management/create-a-kafka-cluster.md

@@ -6,6 +6,9 @@ sidebar_position: 1
 sidebar_label: Create
 ---
 
+import Tabs from '@theme/Tabs';
+import TabItem from '@theme/TabItem';
+
 # Create a Kafka cluster
 
 This document shows how to create a Kafka cluster.

docs/user_docs/kubeblocks-for-mongodb/cluster-management/switchover.md

@@ -6,6 +6,9 @@ sidebar_position: 6
 sidebar_label: Switchover
 ---
 
+import Tabs from '@theme/Tabs';
+import TabItem from '@theme/TabItem';
+
 # Switch over a MongoDB cluster
 
 You can initiate a switchover for a MongoDB ReplicaSet by executing the kbcli or kubectl command. Then KubeBlocks modifies the instance roles.

docs/user_docs/kubeblocks-for-postgresql/cluster-management/restart-a-postgresql-cluster.md

@@ -21,7 +21,7 @@ Restarting a PostgreSQL cluster triggers a concurrent restart and the leader may
 
 1. Restart a cluster.
 
-  You can use `kbcli` or create an OpsRequest to restart a cluster.
+   You can use `kbcli` or create an OpsRequest to restart a cluster.
 
    **Option 1.** (**Recommended**) Use kbcli
 

docs/user_docs/kubeblocks-for-pulsar/cluster-management/create-pulsar-cluster-on-kubeblocks.md

@@ -14,7 +14,7 @@ KubeBlocks supports Pulsar's daily operations, including basic lifecycle operati
 
 ## Environment Recommendation
 
-Refer to the Pulsar official document for the configuration, such as memory, cpu, and storage, of each component.
+Refer to the [Pulsar official document](https://pulsar.apache.org/docs/3.1.x/) for the configuration, such as memory, cpu, and storage, of each component.
 
 |      Components        |                                 Replicas                                  |
 | :--------------------  | :------------------------------------------------------------------------ |
@@ -88,7 +88,7 @@ Refer to the Pulsar official document for the configuration, such as memory, cpu
      ```
 
    - **Option 2**: Create pulsar cluster with proxy.
-     Configuration:
+   Configuration:
      - proxy: 3 replicas
      - broker: 3 replicas
      - bookies: 4 replicas

docs/user_docs/kubeblocks-for-vector-database/manage-vector-databases.md

@@ -8,6 +8,7 @@ sidebar_label: Manage Vector Databases with KubeBlocks
 # Manage Vector Databases with KubeBlocks
 
 The popularity of generative AI (Generative AI) has aroused widespread attention and completely ignited the vector database (Vector Database) market. KubeBlocks supports the management of vector databases, such as Qdrant, Milvus, and Weaviate.
+
 In this chapter, we take Qdrant as an example to show how to manage vector databases with KubeBlocks.
 Before you start, [install KubeBlocks](./../installation/install-with-kbcli/install-kubeblocks-with-kbcli.md) and `kbcli`.