website(ich): fix test script v1

The V-1 Test script was missing a printf statement. Add the missing
statement to make the expected output correct.

Signed-off-by: Tim Culverhouse <tim@timculverhouse.com>

website/app/vt/ich/page.mdx

@@ -32,6 +32,7 @@ margin, but either behavior is acceptable.
 printf "ABC"
 printf "\033[1G"
 printf "\033[2@"
+printf "X"
 ```
 
 ```