Clarify distinction between "IP"/"Internet Protocol" and "internet protocols" (in general)

[rclee33]

Our current entry for "IP" is as follows:

"⁠IP Correct. Stands for Internet Protocol. Capitalize both letters."

However, "internet protocol" can also be used in a general descriptive sense. We should clarify this difference in the WUG.

From Julian:

I think there is a distinction to be made between "IP" to stand for "Internet Protocol", as used in "TCP/IP", "IP address", and other contexts; versus "internet protocols", to be used in a general descriptive sense, such as "TCP/IP is one of the internet protocols. The other protocols are ARP, DHCP, DNS, and FTP." It would definitely not make sense to capitalize "internet" in the latter context.

As an example, this prerequisite is used in several lessons for CL170:

Data center networking concepts (the OSI model, VLANs, firewalls, and the internet protocol suite, including ICMP, IP, and HTTP).