fix docs

Signed-off-by: Nshegangbin <shegangbin1@huawei.com>

zh-cn/application-dev/napi/native-window-guidelines.md

@@ -52,6 +52,10 @@ libnative_window.so
         OH_NativeXComponent *nativeXComponent = nullptr;
         // 通过napi_unwrap接口，解析出NativeXComponent的实例指针
         napi_unwrap(env, exportInstance, reinterpret_cast<void**>(&nativeXComponent));
+        // 获取XComponentId
+        char idStr[OH_XCOMPONENT_ID_LEN_MAX + 1] = {};
+        uint64_t idSize = OH_XCOMPONENT_ID_LEN_MAX + 1;
+        OH_NativeXComponent_GetXComponentId(nativeXComponent, idStr, &idSize);
         ```
     3. 定义 OH_NativeXComponent_Callback。
         ```c++
@@ -103,10 +107,6 @@ libnative_window.so
     int32_t height = 0x100;
     // 这里的nativeWindow是从上一步骤中的回调函数中获得的
     int32_t ret = OH_NativeWindow_NativeWindowHandleOpt(nativeWindow, code, width, height);
-    // 设置 OHNativeWindowBuffer 的步长
-    code = SET_STRIDE;
-    int32_t stride = 0x8;
-    ret = OH_NativeWindow_NativeWindowHandleOpt(nativeWindow, code, stride);
     ```
 
 3. **从图形队列申请OHNativeWindowBuffer**。