Changed version from PartStack provider to rv2 (rv3)

because @thatsIch merged it also to rv2

src/main/java/appeng/integration/modules/waila/part/PartStackWailaDataProvider.java

@@ -27,8 +27,8 @@ import net.minecraft.item.ItemStack;
  *  Part ItemStack provider for WAILA
  *
  * @author TheJulianJES
- * @version rv3
- * @since rv3
+ * @version rv2
+ * @since rv2
  */
 public class PartStackWailaDataProvider extends BasePartWailaDataProvider {
 
@@ -39,4 +39,4 @@ public class PartStackWailaDataProvider extends BasePartWailaDataProvider {
 		return partStack;
 	}
 
-}
+}