Since you are saying it’s a “Page”, I believe you should try is_page
instead of is_home
:
<?php
if ( is_page( 'about' ) ) {
// Code to be shown on Page whose slug is "about"
}
?>
OR for the way your code is, this should do:
<?php if ( is_page( 'about' ) ) { ?>
<!-- Code to be shown on Page whose slug is "about" -->
<?php } ?>