Add comment for LevelUp relearn cap

Thanks Drayano; old news but good to have documented.

pk3DS/Subforms/LevelUp.cs

@@ -122,6 +122,8 @@ private void B_RandAll_Click(object sender, EventArgs e)
             // ORAS: 10682 moves learned on levelup/birth. 
             // 5593 are STAB. 52.3% are STAB. 
             // Steelix learns the most @ 25 (so many level 1)!
+            // Move relearner ingame does not behave properly if the count exceeds 25:
+            // https://twitter.com/Drayano60/status/630044237883666433
             Random rnd = new Random();
 
             int[] firstMoves = { 1, 40, 52, 55, 64, 71, 84, 98, 122, 141 };
@@ -269,4 +271,4 @@ private void CHK_TypeBias_CheckedChanged(object sender, EventArgs e)
                 spec, stab));
         }
     }
-}
+}