Determine correct size of TICKER_CHARACTER_COUNT

Since tickerCharacters is a char pointer rather than a char array the
result is: sizeof(8) / sizeof(1).
However, desired
result is: sizeof(5) / sizeof(1).

See also following example:

const char *tickerCharacters = "|/-\\";
const char _tickerCharacters[] = "|/-\\";

int main(void)
{
	printf("%zu\n", (sizeof(tickerCharacters) / sizeof(char)));
	printf("%zu\n", (sizeof(_tickerCharacters) / sizeof(char)));

	return 0;
}

> gcc test.c -o test && ./test
8
5

src/main/io/dashboard.c

@@ -104,7 +104,7 @@ typedef struct pageEntry_s {
     uint8_t flags;
 } pageEntry_t;
 
-static const char* tickerCharacters = "|/-\\"; // use 2/4/8 characters so that the divide is optimal.
+static const char tickerCharacters[] = "|/-\\"; // use 2/4/8 characters so that the divide is optimal.
 #define TICKER_CHARACTER_COUNT (sizeof(tickerCharacters) / sizeof(char))
 
 typedef enum {