Pulling all pending Bukkit-JavaDoc changes

By: Edmond Poon <sagaciouszzzz@gmail.com>

paper-api/src/main/java/org/bukkit/potion/PotionEffect.java

@@ -126,6 +126,7 @@ public class PotionEffect implements ConfigurationSerializable {
      * Returns the amplifier of this effect. A higher amplifier means the potion
      * effect happens more often over its duration and in some cases has more
      * effect on its target.
+     *
      * @return The effect amplifier
      */
     public int getAmplifier() {
@@ -135,6 +136,7 @@ public class PotionEffect implements ConfigurationSerializable {
     /**
      * Returns the duration (in ticks) that this effect will run for when
      * applied to a {@link LivingEntity}.
+     *
      * @return The duration of the effect
      */
     public int getDuration() {