fix warning

src/main.c

@@ -173,7 +173,7 @@ int search_wordlist(char wordlist[][6], char target[]) {
 	helper function for searching within a string
 */
 int search_word(char word[], char target) {
-	for (int i = 0; i < sizeof(word)/sizeof(word[0]); i++) {
+	for (int i = 0; i < strlen(word); i++) {
 		if (word[i] == target) return i;
 	}
 	return -1;