fix invisible unicode character

send_cliff.sh

@@ -18,7 +18,7 @@ echo "got new URL: $new_img_url"
 if [[ "$last_img_url" == "$new_img_url" ]]; then
     # if it's the same image just exit
     echo "new URL matches previous URL; exiting."
-    exit 1
+    exit 1
 else
     # send message to discord
     curl --request POST \