Update tc.md

Author: lwindolf

Cheat Sheets/Network/tc.md

@@ -1,6 +1,6 @@
 tc is to set network traffic control settings
 
-A good guide can be found at https://linuxvox.com/blog/linux-tc-qdisc/
+An intro can be found at https://linuxvox.com/blog/linux-tc-qdisc/
 
 Additionally there is a [Redhat documentation](https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/9/html/configuring_and_managing_networking/linux-traffic-control_configuring-and-managing-networking)