Update README.md

added omitted letter

Author: heydocode

README.md

@@ -3,7 +3,7 @@
 ServerAPI is a versatile software that allows you to turn any machine (Windows, Linux, and macOS) into a server. It sends machine statistics via email, creates an online server management panel, and provides a console managed by user input and ServerAPI.
 
 ## IMPORTANT
-ServerAPI is in active developpement ad is not released yet!
+ServerAPI is in active developpement and is not released yet!
 
 ## Features