update zh-cn/device-dev/reference/hdi-apis/_audio_mmap_buffer_descripter.md.

Signed-off-by: Nli-yan339 <liyan339@h-partners.com>
Signed-off-by: Nliyan <liyan339@h-partners.com>

zh-cn/device-dev/reference/hdi-apis/_audio_mmap_buffer_descripter.md

@@ -17,8 +17,8 @@ Mmap缓冲区描述符。
 
   | 名称 | 描述 | 
 | -------- | -------- |
-| [memoryAddress](_audio.md#memoryaddress) | 指向mmap缓冲区的指针 | 
-| [memoryFd](_audio.md#memoryfd) | mmap缓冲区的文件描述符 | 
+| [memoryAddress](_audio.md#memoryaddress) | 指向Mmap缓冲区的指针 | 
+| [memoryFd](_audio.md#memoryfd) | Mmap缓冲区的文件描述符 | 
 | [totalBufferFrames](_audio.md#totalbufferframes) | 缓冲区总大小，单位：帧 | 
 | [transferFrameSize](_audio.md#transferframesize) | 传输大小，单位：帧 | 
-| [isShareable](_audio.md#isshareable) | mmap缓冲区是否可以在进程间共享 | 
+| [isShareable](_audio.md#isshareable) | Mmap缓冲区是否可以在进程间共享 |