Fix typo in project.hxp (#1116)

project.hxp

@@ -769,7 +769,7 @@ class Project extends HXProject
 
     // Disable a macro in Lime that generates a random number for Assets.cache.version every build.
     // This doesn't seem to be of any use and it causes lime.utils.AssetCache to be re-compiled on every build.
-    setHaxeDef("lime_disable_assets_version");
+    setHaxedef("lime_disable_assets_version");
 
     // Enable stack trace tracking. Good for debugging but has a (minor) performance impact.
     setHaxedef("HXCPP_CHECK_POINTER");