Moved linear to a better place.

i decided to go with leaving it under gravity, its plenty visible and fine there, since the public enum list self orders I wasn't sure about how i could set a default that wasn't the topmost option

osu.Game.Rulesets.Osu/Mods/OsuModApproachDifferent.cs

@@ -1,4 +1,4 @@
-// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
+// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
 // See the LICENCE file in the repository root for full licence text.
 
 using System;
@@ -90,6 +90,7 @@ private Easing getEasing(AnimationStyle style)
         public enum AnimationStyle
         {
             Gravity,
+            Linear,
             InOut1,
             InOut2,
             Accelerate1,
@@ -98,7 +99,6 @@ public enum AnimationStyle
             Decelerate1,
             Decelerate2,
             Decelerate3,
-            Linear,
         }
     }
 }