Update docs

NTOS does not have agents, they are clients.

documentation/agent-management/README.md

@@ -1,4 +1,4 @@
-# How to manage NTOS-agents
+# How to manage NTOS-clients:
 
 There are many ways to manage NTOS (Linux) agents, and people are free to help me expand this documentation!<br>
 Below I will describe a couple RMM/Management solutions I am familiar with.<br>
@@ -30,4 +30,4 @@ As an example, you can 'shadow' or 'share screen' from MeshCentral.<br>
 
 ![MeshCentral Desktop Example (2560x1440p)](../../assets/images/meshcentral-ntos-desktop.png)
 
-> Note: Screenshot might be out-of-date. But functionality is the same.
+> Note: Screenshot might be out-of-date. But functionality is the same.