Remove useless line continuations (#19399)

keyboards/handwired/gamenum/readme.md

@@ -46,11 +46,11 @@ Next thing to do is to add the actual layer for the keymap.
 
 ```
   [DEF] = LAYOUT(
-    KC_FN0,  KC_SLSH, KC_ASTR, KC_MINS, \
-    KC_7,    KC_8,    KC_9,    KC_PLUS, \
-    KC_4,    KC_5,    KC_6,             \
-    KC_1,    KC_2,    KC_3,             \
-    KC_0,             KC_DOT,  KC_ENT   \
+    KC_FN0,  KC_SLSH, KC_ASTR, KC_MINS,
+    KC_7,    KC_8,    KC_9,    KC_PLUS,
+    KC_4,    KC_5,    KC_6,
+    KC_1,    KC_2,    KC_3,
+    KC_0,             KC_DOT,  KC_ENT
   )
 ```