Fixed static methods in PerlinNoiseGenerator

By: Dinnerbone <dinnerbone@dinnerbone.com>

paper-api/src/main/java/org/bukkit/util/noise/PerlinNoiseGenerator.java

@@ -189,7 +189,7 @@ public class PerlinNoiseGenerator extends NoiseGenerator {
      * @param amplitude How much to alter the amplitude by each octave
      * @return Resulting noise
      */
-    public double getNoise(double x, double y, int octaves, double frequency, double amplitude) {
+    public static double getNoise(double x, double y, int octaves, double frequency, double amplitude) {
         return instance.noise(x, y, octaves, frequency, amplitude);
     }
 
@@ -204,7 +204,7 @@ public class PerlinNoiseGenerator extends NoiseGenerator {
      * @param amplitude How much to alter the amplitude by each octave
      * @return Resulting noise
      */
-    public double getNoise(double x, double y, double z, int octaves, double frequency, double amplitude) {
+    public static double getNoise(double x, double y, double z, int octaves, double frequency, double amplitude) {
         return instance.noise(x, y, z, octaves, frequency, amplitude);
     }
 }