Forgot to convert duration to millis per the API expectation for tick event

Spigot-Server-Patches/0430-Server-Tick-Events.patch

@@ -1,4 +1,4 @@
-From a64fa8711ba3b64574459546673a90803f46011d Mon Sep 17 00:00:00 2001
+From 1c8319a0ee657a502aa5f7a42fb4a2668928ecbd Mon Sep 17 00:00:00 2001
 From: Aikar <aikar@aikar.co>
 Date: Wed, 27 Mar 2019 22:48:45 -0400
 Subject: [PATCH] Server Tick Events
@@ -6,7 +6,7 @@ Subject: [PATCH] Server Tick Events
 Fires event at start and end of a server tick
 
 diff --git a/src/main/java/net/minecraft/server/MinecraftServer.java b/src/main/java/net/minecraft/server/MinecraftServer.java
-index b93fccf91..9a56afeb3 100644
+index b93fccf91..d6250c472 100644
 --- a/src/main/java/net/minecraft/server/MinecraftServer.java
 +++ b/src/main/java/net/minecraft/server/MinecraftServer.java
 @@ -927,6 +927,7 @@ public abstract class MinecraftServer implements IAsyncTaskHandler, IMojangStati
@@ -24,7 +24,7 @@ index b93fccf91..9a56afeb3 100644
 +        // Paper start
 +        long endTime = System.nanoTime();
 +        long remaining = (TICK_TIME - (endTime - lastTick)) - catchupTime;
-+        new com.destroystokyo.paper.event.server.ServerTickEndEvent(this.ticks, endTime - lastTick, remaining).callEvent();
++        new com.destroystokyo.paper.event.server.ServerTickEndEvent(this.ticks, ((double)(endTime - lastTick) / 1000000D), remaining).callEvent();
 +        // Paper end
          co.aikar.timings.TimingsManager.FULL_SERVER_TICK.stopTiming(); // Paper
      }