update en/device-dev/driver/driver-hdf-development.md.

Signed-off-by: Nking_he <6384784@qq.com>

en/device-dev/driver/driver-hdf-development.md

@@ -70,9 +70,9 @@ The HDF-based driver development involves driver implementation and configuratio
    
 2. Build the driver.<br/>
    - LiteOS<br/>
-      Modify **makefile** and **BUILD.gn**.
+      Modify the **Makefile** and **BUILD.gn** files.
 
-      - **makefile**:<br/>
+      - **Makefile**:<br/>
          Use the **makefile** template provided by the HDF to compile the driver code.
 
          
@@ -90,7 +90,7 @@ The HDF-based driver development involves driver implementation and configuratio
          
          ```
          LITEOS_BASELIB += -lxxx # Static library generated by the link.
-         LIB_SUBDIRS    +=         # Directory in which the driver code makefile is located.
+         LIB_SUBDIRS    +=         # Directory in which Makefile is located.
          ```
 
       - **BUILD.gn**:<br/>
@@ -141,7 +141,7 @@ The HDF-based driver development involves driver implementation and configuratio
       obj-$(CONFIG_DRIVERS_HDF)  += xxx/
       ```
 
-      Add a **Makefile** to the driver directory **xxx** and add code compiling rules of the driver to the **Makefile** file.
+      Add a **Makefile** to the driver directory **xxx** and add code compiling rules of the driver to the file.
 
       
       ```