use proper newline

wordle

@@ -173,7 +173,7 @@ function render_board() {
       echo -n "${BOARD[${row},${char}]}${RESET}"
     done
     [[ "${BORDER}" == 1 ]] && echo -en " │"
-    echo -en "${DOWN1}"
+    echo -en "${NEWLINE}"
   done
   [[ "${BORDER}" == 1 ]] && echo -e "└─────────────────┘"
 }