fix: fix qairt quick example modelscope command missing

signed-off-by: "Morgan ZHANG" <zifengzhang18@gmail.com>

Author: ZIFENG278

docs/common/ai/_qairt-quick-example.mdx

@@ -5,8 +5,9 @@
 
 <NewCodeBlock tip="Device" type="device">
 
-```bash pip3 install modelscope modelscope download --model
-radxa/resnet50_qairt --local ./resnet50_qairt
+```bash
+pip3 install modelscope
+modelscope download --model radxa/resnet50_qairt --local ./resnet50_qairt
 ```
 
 </NewCodeBlock>

docs/common/ai/_qairt-usage.mdx

@@ -339,7 +339,7 @@ git clone https://github.com/ZIFENG278/resnet50_qairt_example.git
 
 - 拷贝 NPU 架构专用动态库文件到板端
 
-  请根据 SoC NPU 架构选择相应的 hexagon 文件夹, 这里以 QCS6490 为例字
+  请根据 SoC NPU 架构选择相应的 hexagon 文件夹, 这里以 QCS6490 为例子
 
     <NewCodeBlock tip="X86 Linux PC" type="PC">