Update README.md

Added some notes that may be of importance.
Don't run EOL Linux pls.

README.md

@@ -2,9 +2,11 @@
 
 **IMPORTANT NOTES** - **DON'T IGNORE THESE!**
 * The goal for this repo is to work on **Linux**, but Windows support is available.
+* Ensure that your machine is running at least **Ubuntu 20.04** (GLIB minimum of 2.31)
 > While Windows is supported by the repository, there may be things that don't fully function on Windows that we may have missed.
 > Please report any issues you run into!
 * This repository only supports Sourcemod **1.11** and up.
+* Everything on this repository is being tested on Sourcemod **1.12** (specifically **1.12.7137**) as of the 25th of May, 2024.
 
 ## **About:**
 
@@ -13,7 +15,7 @@ In its current state it allows anyone to host their own up to date competitive L
 This project is **Actively Developed**.
 
 > **Included Matchmodes:**
-* **Zonemod 2.8.9**
+* **Zonemod 2.8.9c**
 * **Zonemod Hunters**
 * **Zonemod Retro**
 * **NeoMod 0.4a**