doc: fix broken links

docs/en/02-intro/index.md

@@ -16,9 +16,9 @@ The major features are listed below:
 3. Support for [all kinds of queries](/develop/query-data), including aggregation, nested query, downsampling, interpolation and others.
 4. Support for [user defined functions](/develop/udf).
 5. Support for [caching](/develop/cache). TDengine always saves the last data point in cache, so Redis is not needed in some scenarios.
-6. Support for [continuous query](/develop/continuous-query).
-7. Support for [data subscription](/develop/subscribe) with the capability to specify filter conditions.
-8. Support for [cluster](/cluster/), with the capability of increasing processing power by adding more nodes. High availability is supported by replication. 
+6. Support for [continuous query](../develop/continuous-query).
+7. Support for [data subscription](../develop/subscribe) with the capability to specify filter conditions.
+8. Support for [cluster](../cluster/), with the capability of increasing processing power by adding more nodes. High availability is supported by replication. 
 9. Provides an interactive [command-line interface](/reference/taos-shell) for management, maintenance and ad-hoc queries.
 10. Provides many ways to [import](/operation/import) and [export](/operation/export) data.
 11. Provides [monitoring](/operation/monitor) on running instances of TDengine.

docs/en/07-develop/06-subscribe.mdx

@@ -28,7 +28,7 @@ taos_consume
 taos_unsubscribe
 ```
 
-For more details about these APIs please refer to [C/C++ Connector](/reference/connector/cpp). Their usage will be introduced below using the use case of meters, in which the schema of STable and subtables from the previous section [Continuous Query](/develop/continuous-query) are used. Full sample code can be found [here](https://github.com/taosdata/TDengine/blob/master/examples/c/subscribe.c).
+For more details about these APIs please refer to [C/C++ Connector](/reference/connector/cpp). Their usage will be introduced below using the use case of meters, in which the schema of STable and subtables from the previous section [Continuous Query](../continuous-query) are used. Full sample code can be found [here](https://github.com/taosdata/TDengine/blob/master/examples/c/subscribe.c).
 
 If we want to get a notification and take some actions if the current exceeds a threshold, like 10A, from some meters, there are two ways:
 

docs/en/25-application/03-immigrate.md

@@ -423,7 +423,7 @@ FQDN, firstEp, secondEP, dataDir, logDir, tmpDir, serverPort. For the specific m
 
 Follow the same steps to set parameters on the other nodes, start the taosd service, and then add Dnodes to the cluster.
 
-Finally, start `taos` and execute the `show dnodes` command. If you can see all the nodes that have joined the cluster, the cluster building process was successfully completed. For specific operation procedures and precautions, please refer to the document "[TDengine Cluster Installation and Management](/cluster/)".
+Finally, start `taos` and execute the `show dnodes` command. If you can see all the nodes that have joined the cluster, the cluster building process was successfully completed. For specific operation procedures and precautions, please refer to the document "[Cluster Deployment](../../cluster)".
 
 ## Appendix 4: Super Table Names
 
@@ -431,5 +431,5 @@ Since OpenTSDB's metric name has a dot (".") in it, for example, a metric with a
 
 ## Appendix 5: Reference Articles
 
-1. [Using TDengine + collectd/StatsD + Grafana to quickly build an IT operation and maintenance monitoring system](/application/collectd/)
-2. [Write collected data directly to TDengine through collectd](/third-party/collectd/)
+1. [Using TDengine + collectd/StatsD + Grafana to quickly build an IT operation and maintenance monitoring system](../collectd/)
+2. [Write collected data directly to TDengine through collectd](../../third-party/collectd/)