Update Nyquist layout (#5270)

* Add Home,End,Insert,Del to Arrow layer

* Add Back & Forward to Arrow layer

* fix typo

keyboards/keebio/nyquist/keymaps/skug/keymap.c

@@ -112,11 +112,11 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
 
 /* Arrow layer
  * ,-----------------------------------------.   .-----------------------------------------.
- * |      |      |      |      |      |      |   |      |      |      |      |      | PgUp |
+ * |  §/½ |      |      |      |      |      |   |      |      |      | Ins  | Home | PgUp |
  * |------+------+------+------+------+------+   +------+------+------+------+------+------|
- * |      |      |  Up  |      |      |      |   |      |      |      |      |      | PgDn |
+ * |      |      |  Up  |      |      |      |   |      |      |      | Del  | End  | PgDn |
  * |------+------+------+------+------+------|   |------+------+------+------+------+------|
- * |      | Left | Down | Right|      |      |   |      |      |      |      |      |      |
+ * |      | Left | Down | Right|      | Back |   |  Fwd |      |      |      |      |      |
  * |------+------+------+------+------+------|   |------+------+------+------+------+------|
  * |      |      |      |      |      |      |   |      |      |      |      |      |      |
  * |------+------+------+------+------+------+   +------+------+------+------+------+------|
@@ -124,9 +124,9 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
  * `-----------------------------------------'   '-----------------------------------------'
  */
 [ARRW] = LAYOUT( \
-  NO_HALF,  _______,  _______,  _______ ,  _______,  _______,     _______,  _______,  _______,  _______,  _______,  KC_PGUP, \
-  _______,  _______,  KC_UP  ,  _______ ,  _______,  _______,     _______,  _______,  _______,  _______,  _______,  KC_PGDN, \
-  _______,  KC_LEFT,  KC_DOWN,  KC_RIGHT,  _______,  _______,     _______,  _______,  _______,  _______,  _______,  _______, \
+  NO_HALF,  _______,  _______,  _______ ,  _______,  _______,     _______,  _______,  _______,  KC_INS ,  KC_HOME,  KC_PGUP, \
+  _______,  _______,  KC_UP  ,  _______ ,  _______,  _______,     _______,  _______,  _______,  KC_DEL ,  KC_END ,  KC_PGDN, \
+  _______,  KC_LEFT,  KC_DOWN,  KC_RIGHT,  _______,  KC_WBAK,     KC_WFWD,  _______,  _______,  _______,  _______,  _______, \
   _______,  _______,  _______,  _______ ,  _______,  _______,     _______,  _______,  _______,  _______,  _______,  _______, \
   _______,  _______,  _______,  KC_DEL  ,  _______,  _______,     _______,  _______,  _______,  _______,  _______,  _______  \
 ),