`build-essentials` package should be `build-essential`

Line https://github.com/crest-lab/crest-docs/blob/24b4dd4bcaa28031993f6ad2b9a7183a87f15a30/page/installation/install_compile.md?plain=1#L47 has a typo: 

It should be: 


```bash
sudo apt-get install build-essential
```
