More JavaDoc improvements.

src/main/java/org/bukkit/event/weather/WeatherEvent.java

@@ -4,7 +4,7 @@ import org.bukkit.World;
 import org.bukkit.event.Event;
 
 /**
- * Represents an Weather-related event
+ * Represents a Weather-related event
  */
 public class WeatherEvent extends Event {
     protected World world;
@@ -15,8 +15,9 @@ public class WeatherEvent extends Event {
     }
 
     /**
-     * Returns the World where this event is occuring
-     * @return World this event is occuring in
+     * Returns the World where this event is occurring
+     *
+     * @return World this event is occurring in
      */
     public final World getWorld() {
         return world;