Remove legacy keycodes, part 4 (#18683)

* `KC_PGDOWN` -> `KC_PGDN`

* `KC_PSCREEN` -> `KC_PSCR`

* `KC_SCOLON` -> `KC_SCLN`

* `KC_BSLASH` -> `KC_BSLS`

* `KC_BSPACE` -> `KC_BSPC`

keyboards/sofle/keymaps/devdev/keymap.c

@@ -545,7 +545,7 @@ bool encoder_update_user(uint8_t index, bool clockwise) {
 				case _QWERTY:
 				case _COLEMAKDH:
 					if (clockwise) {
-						tap_code(KC_PGDOWN);
+						tap_code(KC_PGDN);
 					} else {
 						tap_code(KC_PGUP);
 					}