Update installation-linux.rst
Update installation-linux.rst

The [nodejs-legacy package](https://packages.debian.org/search?searchon=names&keywords=nodejs-legacy) is now installed through a node syslink with the distribution official repositories installation of nodejs.
maferelo/saleor,UITools/saleor,UITools/saleor,mociepka/saleor,maferelo/saleor,UITools/saleor,mociepka/saleor,mociepka/saleor,UITools/saleor,UITools/saleor,maferelo/saleor