Clarify requirements for custom plugins and mods

Author: JamesIves

CONTRIBUTING.md

@@ -7,8 +7,8 @@ I appreciate your interest in contributing to this project! Please review the ge
 The four main requirements for this project are:
 
 1. Start a Half-Life dedicated server easily with Docker.
-2. Have the ability for users to install custom plugins, maps and server configurations by providing a way to manipulate the server directory. Commonly used server plugins are intentionally not provided as a default, these are considered a user concern as the server should only include what is provided by Valve.
-3. Have the ability to run servers for custom mods by providing a way to manipulate the server startup.
+2. Have the ability for users to install custom plugins, maps and server configurations by providing a way to manipulate the server directory. Commonly used server plugins are intentionally not provided as a default, these are considered a user concern as the server should only include what is provided out of the box from Valve.
+3. Have the ability to run servers for custom mods by providing a way to manipulate the server startup and directory.
 4. Only support legal usage of Steam and Valve's titles. **It will not, and never will, support the ability to circumvent any licensing or other restrictions Valve imposes.** The project maintainers will report any shady behaviour to [Valve](https://www.valvesoftware.com/en/) and/or [GitHub](https://github.com).
 
 ## Process