Wuque Mammoth20x Layout Macro Refactor (#14568)

* mammoth20x: edit size of RightEncode key in Configurator

* physically arrange layout macro

Arranges the keycodes to resemble the assembled board.

* rename LAYOUT_default to LAYOUT

Includes "layout_aliases" tree in info.json for backwards compatibility.

* rules.mk touch-up

* convert tabs to spaces
* add line break before ENCODER_ENABLE (not included in QMK's template)

* readme.md touch-up

* remove zero-width space characters
* markdown fix for info paragraph
* update link text

keyboards/wuque/mammoth20x/readme.md

@@ -1,11 +1,11 @@
 # mammoth20x
-​
-More Info at[wuquestudio](https://shop.wuquestudio.com/).
-​
+
+More info at [Wuque Studio](https://shop.wuquestudio.com/).
+
 * Keyboard Maintainer: [spbgzh](https://github.com/spbgzh)
 * Hardware Supported: mammoth20x Standard
-* Hardware Availability: [mammoth20x](https://shop.wuquestudio.com/)
-​
+* Hardware Availability: [Wuque Studio](https://shop.wuquestudio.com/)
+
 Make example for this keyboard (after setting up your build environment):
 
     make wuque/mammoth20x:default