Update update.sh

Signed-off-by: Zoey <[email protected]>

update.sh

@@ -11,7 +11,7 @@ if ! echo "$UI" | grep -q "^[0-9]\+[smhd]\?$"; then
 fi
 
 if [ -z "$DUK" ] || ! echo "$DUK" | grep -q "^[A-Za-z0-9]{32\}$"; then
-    echo "DUK is unset or invalid, it can consist of 32 of the follwoing characters, upper letters A-Z, lower letters a-z and numbers 0-9."
+    echo "DUK is unset or invalid, it can consist of 32 of the following characters, upper letters A-Z, lower letters a-z and numbers 0-9."
     sleep inf
 fi