Fix comment of CM_QUES (Colemak question mark) (#18557)

`#define CM_QUES S(CM_SLSH) // /` → `#define CM_QUES S(CM_SLSH) // ?`

quantum/keymap_extras/keymap_colemak.h

@@ -122,4 +122,4 @@
 // Row 4
 #define CM_LABK S(CM_COMM) // <
 #define CM_RABK S(CM_DOT)  // >
-#define CM_QUES S(CM_SLSH) // /
+#define CM_QUES S(CM_SLSH) // ?