fix hotdox76v2 oled font to more closely mirror utf8 (qmk#23807)

Author: wdouglass

keyboards/hotdox76v2/hotdox76v2.c

@@ -60,7 +60,7 @@ led_config_t g_led_config = {
 
 #ifdef OLED_ENABLE
 
-#    define UNC (94 + 0x21)
+#    define UNC (' ')
 typedef struct _master_to_slave_t {
     int  cur_alp_index;
     char current_alp[7];
@@ -115,8 +115,8 @@ void render_layer_helper_fun(uint8_t start_line, const char *data, uint8_t gap_w
     for (j = 0; j < l; ++j) {      // font index
         for (k = 0; k < 12; ++k) { // font byte index
             //                                        base + logo_w(32) + gap_w(12) +l*font_w(12)+current_byte_index
-            oled_write_raw_byte(pgm_read_byte(&ext_big_font[pgm_read_byte(&data[j]) - 0x21][k]), start_line * 2 * 128 + 32 + gap_w + j * 12 + k);
-            oled_write_raw_byte(pgm_read_byte(&ext_big_font[pgm_read_byte(&data[j]) - 0x21][k + 12]), start_line * 2 * 128 + 128 + 32 + gap_w + j * 12 + k);
+            oled_write_raw_byte(pgm_read_byte(&ext_big_font[pgm_read_byte(&data[j]) - 0x20][k]), start_line * 2 * 128 + 32 + gap_w + j * 12 + k);
+            oled_write_raw_byte(pgm_read_byte(&ext_big_font[pgm_read_byte(&data[j]) - 0x20][k + 12]), start_line * 2 * 128 + 128 + 32 + gap_w + j * 12 + k);
         }
     }
     for (j = 0; j < gap_w; ++j) {
@@ -151,8 +151,8 @@ void render_cur_input_helper_fun(uint8_t start_line, const char *data, uint8_t g
     for (j = 0; j < l; ++j) {      // font index
         for (k = 0; k < 12; ++k) { // font byte index
             //                                        base + logo_w(0) + gap_w(12) +l*font_w(12)+current_byte_index
-            oled_write_raw_byte(pgm_read_byte(&ext_big_font[data[j] - 0x21][k]), start_line * 2 * 128 + gap_w + j * 12 + k);
-            oled_write_raw_byte(pgm_read_byte(&ext_big_font[data[j] - 0x21][12 + k]), start_line * 2 * 128 + 128 + gap_w + j * 12 + k);
+            oled_write_raw_byte(pgm_read_byte(&ext_big_font[data[j] - 0x20][k]), start_line * 2 * 128 + gap_w + j * 12 + k);
+            oled_write_raw_byte(pgm_read_byte(&ext_big_font[data[j] - 0x20][12 + k]), start_line * 2 * 128 + 128 + gap_w + j * 12 + k);
         }
     }
     for (j = 0; j < gap_w; ++j) {