Update README.md

Author: SichengH

README.md

@@ -27,7 +27,7 @@
 
 2. Sshuttle into the production server
 
-   Run the following command after filling in the  LCP username and IP address: `alias sshcsail="sshuttle -r <LCP    username>@heimdallr.csail.mit.edu <IP address for Heimdallr>/24"`
+   Run the following command after filling in the  LCP username and IP address: `alias sshcsail="sshuttle -r <LCP    username>@heimdallr.csail.mit.edu 192.168.100.0/24"`
 
    Run command: `sshcsail`