Update miryoku_double_tap_guard.dtsi

Finish update to double tap term

Author: violet-fish

miryoku/miryoku_double_tap_guard.dtsi

@@ -7,7 +7,7 @@
     NAME: NAME { \
       compatible = "zmk,behavior-tap-dance"; \
       #binding-cells = <0>; \
-      tapping-term-ms = <U_TAPPING_TERM>; \
+      tapping-term-ms = <U_DOUBLE_TAPPING_TERM>; \
       bindings = <&none>, <BINDING>; \
     }; \
   }; \