Update SysAdminCheatSheet.md

Author: mayeaux

docs/SysAdminCheatSheet.md

@@ -1,25 +1,25 @@
 # Useful tools
 
 ## start webapp with pm2
-pm2 start --name=webapp npm -- start
+`pm2 start --name=webapp npm -- start`
 
 ## start caching with pm2
-pm2 start --name=caching npm -- cache
+`pm2 start --name=caching npm -- run cache --`
 
 ## show data usage
-vnstat -i eth0
+`vnstat -i eth0`
 
 ## show live bandwidth connections
-nload eth0
+`nload eth0`
 
 ## show live connections on port 80
-netstat -anp | grep :80 | wc -l
+`netstat -anp | grep :80 | wc -l`
 
 ## start caching with forever
-forever start -c "npm run cache" ./
+`forever start -c "npm run cache" ./`
 
 ## show incoming tcp connections
-sudo tcptrack -i eth0
+`sudo tcptrack -i eth0`