Update README.md

Author: Eight8-7020

README.md

@@ -1,7 +1,7 @@
 # Bot latency plugin for [Dragory's ModMail](https://github.com/dragory/modmailbot)
 
 ### Setup: ###
-Make sure your running at least v2.31.0-beta.3 of Modmail.
+Make sure your running at least v3.0.3 of Modmail.
 in your config.ini file, make a new line and add:  
 ```ini
 plugins[] = npm:MMPlugins/Ping