Update manual/deployment/mmc_deploy_android.md

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

Author: DrSmoothl

manual/deployment/mmc_deploy_android.md

@@ -101,7 +101,7 @@ python3 --version
 ```bash
 # 使用 pip 安装 uv
 pip3 install uv --break-system-packages -i https://mirrors.huaweicloud.com/repository/pypi/simple/
-echo 'export PATH="$HOME/.local/bin:$PATH"' >> ~/.bashrc
+grep -qF 'export PATH="$HOME/.local/bin:$PATH"' ~/.bashrc || echo 'export PATH="$HOME/.local/bin:$PATH"' >> ~/.bashrc
 source ~/.bashrc
 ```