fix

Author: lucasfang

docs/content/program-api/cpp-api.md

@@ -34,10 +34,10 @@ format with maximum efficiency.
 ## Environment Settings
 
 [Paimon C++](https://github.com/alibaba/paimon-cpp.git) is currently governed under Alibaba open source
-community.You can checkout the [document](https://alibaba.github.io/paimon-cpp/getting_started.html)
+community. You can checkout the [document](https://alibaba.github.io/paimon-cpp/getting_started.html)
 for more details about envinroment settings.
 
-```
+```sh
 git clone https://github.com/alibaba/paimon-cpp.git
 cd paimon-cpp
 mkdir build-release