update docs-en/subsystems/compilation-and-building-guidelines.md.

docs-en/subsystems/compilation-and-building-guidelines.md

@@ -31,7 +31,7 @@ build/lite                          # Primary directory for compilation and buil
     python build.py product [options]
     ```
 
-    Replace  **product**  with  **build/lite/produc/**_xxx_**.json**. Both the product name and components configured in the JSON file can be customized. By default, all components supported by the corresponding platform are contained in the JSON file.
+    Replace  **product**  with  **build/lite/product/**_xxx_**.json**. Both the product name and components configured in the JSON file can be customized. By default, all components supported by the corresponding platform are contained in the JSON file.
 
 -   Compilation options
 
@@ -198,10 +198,10 @@ build/lite                          # Primary directory for compilation and buil
 
 2.  Compile the product solution.
 
-    The configuration of the product solution is stored in a JSON file \(for example,  **ipcamera\_hi3516dv300.json**\) under the  **build/lite/product**  directory. During the construction, the system reads the configuration file, which contains custom subsystems and components. To compile  **ipcamera\_hi3516dv30**, for example, run the following command:
+    The configuration of the product solution is stored in a JSON file \(for example,  **ipcamera\_hi3516dv300.json**\) under the  **build/lite/product**  directory. During the construction, the system reads the configuration file, which contains custom subsystems and components. To compile  **ipcamera\_hi3516dv300**, for example, run the following command:
 
     ```
-    python build.py ipcamera_hi3516dv30
+    python build.py ipcamera_hi3516dv300
     ```
 
 3.  Obtain the compilation result.