!2456 【轻量级 PR】：update en/readme/testing.md.

Merge pull request !2456 from stivn/N/A

en/readme/testing.md

@@ -303,7 +303,7 @@ The Python environment is required.
         >**version**: whether to build the test version. The default value is  **false**.
         >**testcase**: whether to build the test case. The default value is  **true**.
 
-    2.  For devices that support the Harmony device connector \(hdc\), modify the configuration file as follows:
+    2.  For devices that support the OpenHarmony device connector \(hdc\), modify the configuration file as follows:
 
         \[device\]    \# Configure the device information with the  **"usb-hdc"**  attribute, including the test device IP address and the matched hdc port.