Fix spelling of "persistent"

Fixes #1201.

keyboards/jd45/keymaps/jeebak/keymap.c

@@ -283,7 +283,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
 /*`----------+-----------+-----------+-----------+----^^^----+----^^^----+-----------+-----------+-----------+--------'*/
 };
 
-void persistant_default_layer_set(uint16_t default_layer) {
+void persistent_default_layer_set(uint16_t default_layer) {
   eeconfig_update_default_layer(default_layer);
   default_layer_set(default_layer);
 }