update doc

Signed-off-by: Nshawn_he <shawn.he@huawei.com>

en/device-dev/subsystems/subsys-boot-overview.md

@@ -93,7 +93,7 @@ On each development board, you need to partition the memory to store the precedi
 
     **boot.img** building and loading varies depending on the platform. The implementation on mainstream OpenHarmony platforms is as follows:
 
-    - Hi3516DV300
+    - Hi3516D V300
 
       On this platform, the **boot.img** file uses the flattened image tree (FIT) format. It is generated by the Mkimage tool by packing the **zImage-dtb** and **cpio** images, which are generated after kernel compilation, based on the information in the **.its** file.
 
@@ -146,7 +146,7 @@ On each development board, you need to partition the memory to store the precedi
   | init        | /init                                                        |                                                              |
   | blkdevparts | mmcblk0:1M(boot),15M(kernel),200M(system),200M(vendor),<br>2M(misc),20M(updater),-(userdata) | Partition table information. The kernel creates physical partitions based on the information.                |
   | hardware    | Hi3516D V300, rk3568, etc.                                                 | (Mandatory information) Hardware platform.|
-  | root        | /dev/ram0 (Hi3516DV00) , root=PARTUUID=614e0000-0000 rw (rk3568)                                                   | Boot device loaded by the kernel.|
+  | root        | /dev/ram0 (Hi3516D V00) , root=PARTUUID=614e0000-0000 rw (rk3568)                                                   | Boot device loaded by the kernel.|
   | rootfstype  | ext4                                                         | Type of the root file system.|
   | default_boot_device | soc/10100000.himci.eMMC | (Recommended information) Default boot device. In the first phase of the boot process, a soft link will be created for the required device based on this field.|
   | ohos.required_mount.xxx | /dev/block/platform/soc/10100000.himci.eMMC/by-name/xxx@/usr@ext4@ro,barrier=1@wait,required |  The fstab information is first read from cmdline. If this fails, the system will try to read the information from the **fstab.required** file.|