Document units of Batch rotation (libgdx#7366)

* Document units of Batch rotation

* Fix whitespace from GitHub editor

* Fix code style in Batch.java

* Remove a trailing whitespace

gdx/src/com/badlogic/gdx/graphics/g2d/Batch.java

@@ -88,7 +88,7 @@ public interface Batch extends Disposable {
 	 * @param height the height in pixels
 	 * @param scaleX the scale of the rectangle around originX/originY in x
 	 * @param scaleY the scale of the rectangle around originX/originY in y
-	 * @param rotation the angle of counter clockwise rotation of the rectangle around originX/originY
+	 * @param rotation the angle of counter clockwise rotation of the rectangle around originX/originY, in degrees
 	 * @param srcX the x-coordinate in texel space
 	 * @param srcY the y-coordinate in texel space
 	 * @param srcWidth the source with in texels
@@ -154,14 +154,16 @@ public void draw (Texture texture, float x, float y, float width, float height,
 	/** Draws a rectangle with the bottom left corner at x,y and stretching the region to cover the given width and height. The
 	 * rectangle is offset by originX, originY relative to the origin. Scale specifies the scaling factor by which the rectangle
 	 * should be scaled around originX, originY. Rotation specifies the angle of counter clockwise rotation of the rectangle around
-	 * originX, originY. */
+	 * originX, originY.
+	 * @param rotation rotation in degrees */
 	public void draw (TextureRegion region, float x, float y, float originX, float originY, float width, float height,
 		float scaleX, float scaleY, float rotation);
 
 	/** Draws a rectangle with the texture coordinates rotated 90 degrees. The bottom left corner at x,y and stretching the region
 	 * to cover the given width and height. The rectangle is offset by originX, originY relative to the origin. Scale specifies the
 	 * scaling factor by which the rectangle should be scaled around originX, originY. Rotation specifies the angle of counter
 	 * clockwise rotation of the rectangle around originX, originY.
+	 * @param rotation rotation in degrees
 	 * @param clockwise If true, the texture coordinates are rotated 90 degrees clockwise. If false, they are rotated 90 degrees
 	 *           counter clockwise. */
 	public void draw (TextureRegion region, float x, float y, float originX, float originY, float width, float height,