use CURRENT_API_VERSION in generated config file

Author: FuroYT

source/funkin/editors/ModConfigWarning.hx

@@ -17,7 +17,7 @@ AUTHOR="YOU/YOUR TEAM HERE"
 VERSION="YOUR MOD\'S VERSION HERE"
 
 # DO NOT EDIT!! this is used to check for version compatibility!
-API_VERSION=1
+API_VERSION=${Flags.CURRENT_API_VERSION}
 
 DOWNLOAD_LINK="YOUR MOD PAGE LINK HERE"