add KC_Grave and fix typo on readme

keyboards/kc60/keymaps/mechmerlin/keymap.c

@@ -13,7 +13,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
       KC_LCTL,  KC_LGUI,  KC_LALT,                     KC_SPC,                             KC_NO,    MO(1),    KC_RALT,  KC_RGUI,  KC_RCTL \
       ),
   [1] = KEYMAP( /* FN Layer 1 */
-      KC_ESC,   KC_F1,     KC_F2,     KC_F3,    KC_F4,     KC_F5,     KC_F6,     KC_F7,    KC_F8,    KC_F9,     KC_F10,     KC_F11,   KC_F12,   KC_DEL,  \
+      KC_GRV,   KC_F1,     KC_F2,     KC_F3,    KC_F4,     KC_F5,     KC_F6,     KC_F7,    KC_F8,    KC_F9,     KC_F10,     KC_F11,   KC_F12,   KC_DEL,  \
       KC_TRNS,  KC_TRNS,   KC_TRNS,   KC_TRNS,  RESET,     KC_TRNS,   KC_TRNS,   KC_TRNS,  KC_TRNS,  KC_TRNS,   KC_TRNS,    KC_TRNS,  KC_TRNS,  KC_TRNS,  \
       KC_CAPS,  KC_TRNS,   KC_TRNS,   KC_TRNS,  KC_TRNS,   KC_TRNS,   KC_TRNS,   KC_TRNS,  KC_TRNS,  KC_TRNS,   KC_TRNS,    KC_TRNS,  KC_NO,    KC_TRNS,   \
       KC_TRNS,  KC_NO,     KC_TRNS,   KC_TRNS,  KC_TRNS,   KC_TRNS,   KC_TRNS,   KC_TRNS,  KC_MUTE,  KC_VOLD,   KC_VOLU,    KC_TRNS,  KC_NO,    KC_PGUP,  \

keyboards/kc60/keymaps/mechmerlin/readme.md

@@ -7,7 +7,7 @@ This is the 60% layout used by MechMerlin. It has 3 layers, base QWERTY, FN 1, a
 - Highly influenced by the KBP V60 and WKL B.Face standard layouts
 - Does not support any form of inswitch or underglow lighting as Merlin hates them.
 - Arrow toggle switch is FN + Space
-- Rest is FN + R
+- Reset is FN + R
 
 
 ### Build