docs: correct text before links

docs/en/10-programming/01-connect/02-java.md

@@ -77,6 +77,6 @@ Code bellow get JDBC URL from environment variables first and then create a `Con
 {{#include docs/examples/java/src/main/java/com/taos/example/ConnectCloudExample.java:connect}}
 ```
 
-For how to write data and query data, please refer to [Data In](https://docs.tdengine.com/cloud/data-in/) and [Data Out](https://docs.tdengine.com/cloud/data-out/).
+The client connection is then established. For how to write data and query data, please refer to [Data In](https://docs.tdengine.com/cloud/data-in/) and [Data Out](https://docs.tdengine.com/cloud/data-out/).
 
 For more details about how to write or query data via REST API, please check [REST API](https://docs.tdengine.com/cloud/programming/connector/rest-api/).

docs/en/10-programming/01-connect/04-rust.md

@@ -72,7 +72,7 @@ Copy following code to `main.rs`.
 {{#include docs/examples/rust/cloud-example/src/main.rs}}
 ```
 
-For how to write data and query data, please refer to [Data In](https://docs.tdengine.com/cloud/data-in/) and [Data Out](https://docs.tdengine.com/cloud/data-out/).
+Then you can execute `cargo run` to test the connection. For how to write data and query data, please refer to [Data In](https://docs.tdengine.com/cloud/data-in/) and [Data Out](https://docs.tdengine.com/cloud/data-out/).
 
 
 For more details about how to write or query data via REST API, please check [REST API](https://docs.tdengine.com/cloud/programming/connector/rest-api/).