docs(readme): 📝 update short description

PRS is not a UI -- it's a script that provides a framework for playing Procedural Realms with Mudlet, and happens to provide a minimal geyser UI.

Author: iLPdev

README.md

@@ -19,7 +19,7 @@
 
 <!-- SHORT DESCRIPTION -->
 <p align="center">
-    Mudlet UI for Procedural Realms MUD
+    Mudlet script for Procedural Realms MUD
     <br />
 </p>