fix: types for getPoints method

Author: ilyaryabchinski

types/phaser.d.ts

@@ -39154,7 +39154,7 @@ declare namespace Phaser {
              * @param stepRate The distance between each point on the line. When set, `quantity` is implied and should be set to `0`.
              * @param output An optional array of Points, or point-like objects, to store the coordinates of the points on the line.
              */
-            getPoints<O extends Phaser.Geom.Point>(quantity: integer, stepRate?: integer, output?: O): O;
+            getPoints<O extends Phaser.Geom.Point[]>(quantity: integer, stepRate?: integer, output?: O): O;
 
             /**
              * Get a random Point on the Line.