fix: Moved NuGet targets from ref to lib

Author: TwoTenPvP

MLAPI.nuspec

@@ -21,13 +21,13 @@
   </metadata>
   <files>
     <file src="LICENCE" target="LICENCE" />
-	  <file src="MLAPI/bin/$configuration$/net35/*" target="ref/net35"/>
-      <file src="MLAPI/bin/$configuration$/net45/*" target="ref/net45"/>
-      <file src="MLAPI/bin/$configuration$/net471/*" target="ref/net471"/>
-	  <file src="MLAPI/bin/$configuration$/netstandard2.0/*" target="ref/netstandard2.0"/>
-      <file src="Libraries/Unity/UnityEngine*" target="ref/net35"/>
-      <file src="Libraries/Unity/UnityEngine*" target="ref/net45"/>
-      <file src="Libraries/Unity/UnityEngine*" target="ref/net471"/>
-      <file src="Libraries/Unity/UnityEngine*" target="ref/netstandard2.0"/>
+	<file src="MLAPI/bin/$configuration$/net35/*" target="lib/net35"/>
+    <file src="MLAPI/bin/$configuration$/net45/*" target="lib/net45"/>
+    <file src="MLAPI/bin/$configuration$/net471/*" target="lib/net471"/>
+	<file src="MLAPI/bin/$configuration$/netstandard2.0/*" target="lib/netstandard2.0"/>
+    <file src="Libraries/Unity/UnityEngine*" target="lib/net35"/>
+    <file src="Libraries/Unity/UnityEngine*" target="lib/net45"/>
+    <file src="Libraries/Unity/UnityEngine*" target="lib/net471"/>
+    <file src="Libraries/Unity/UnityEngine*" target="lib/netstandard2.0"/>
   </files>
 </package>