Update node-install-procedure-debian-10.md

Author: skzap

avalon/node-install-procedure-debian-10.md

@@ -29,6 +29,8 @@ wget -qO - https://www.mongodb.org/static/pgp/server-4.2.asc | sudo apt-key add
 echo "deb http://repo.mongodb.org/apt/debian buster/mongodb-org/4.2 main" | sudo tee /etc/apt/sources.list.d/mongodb-org-4.2.list
 sudo apt-get update
 sudo apt-get install -y mongodb-org
+## Start/Enable mongo
+sudo systemctl enable mongod
 ```
 
 ```bash