Added publish date for page in beginner theme

content-page.php

<?php
// Get the customizer value.
$title = beginner_mod( PREFIX . 'page-title' );
?>

<article id="post-<?php the_ID(); ?>" <?php post_class(); ?> <?php hybrid_attr( 'post' ); ?>>

	<?php if ( $title ) : ?>
		<?php the_title( '<h1 class="page-title" ' . hybrid_get_attr( 'entry-title' ) . '>', '</h1>' ); ?>
	<?php endif; ?>
	<?php
			// post date

			if ( 'published' == $date_type ) {
				$datestamp = get_the_date();
				$timestamp = get_the_time( 'U' );
				$datetime  = get_the_date( 'c' );
			} else {
				$datestamp = get_the_modified_date();
				$timestamp = get_the_modified_time( 'U' );
				$datetime  = get_the_modified_date( 'c' );
			}

			if ( 'absolute' == $date_style ) {
				$date_string = esc_html( $datestamp );
			} else {
				$date_string = sprintf( esc_html__( '%s ago', 'beginner' ), human_time_diff( $timestamp, current_time( 'timestamp' ) ) );
			}

			$time_string = sprintf( '<time datetime="%1$s">%2$s</time>',
				esc_attr( $datetime ),
				$date_string
			);

			printf( _x( '<span class="post-date">Last Updated: %1$s</span>', 'post meta', 'beginner' ), $time_string );

	?>

	<div class="entry-content" <?php hybrid_attr( 'entry-content' ); ?>>
		<?php the_content(); ?>
		<?php
			wp_link_pages( array(
				'before' => '<div class="page-links">' . esc_html__( 'Pages:', 'beginner' ),
				'after'  => '</div>',
			) );
		?>
	</div><!-- .entry-content -->

	<?php edit_post_link( esc_html__( 'Edit', 'beginner' ), '<footer class="entry-footer"><span class="edit-link">', '</span></footer>' ); ?>

</article><!-- #post-## -->