Source

File: wp-admin/includes/class-wp-ms-themes-list-table.php

public function column_description( $theme ) {
		global $status, $totals;

		if ( $theme->errors() ) {
			$pre = 'broken' === $status ? __( 'Broken Theme:' ) . ' ' : '';
			echo '<p><strong class="error-message">' . $pre . $theme->errors()->get_error_message() . '</strong></p>';
		}

		if ( $this->is_site_themes ) {
			$allowed = $theme->is_allowed( 'site', $this->site_id );
		} else {
			$allowed = $theme->is_allowed( 'network' );
		}

		$class = ! $allowed ? 'inactive' : 'active';
		if ( ! empty( $totals['upgrade'] ) && ! empty( $theme->update ) ) {
			$class .= ' update';
		}

		echo "<div class='theme-description'><p>" . $theme->display( 'Description' ) . "</p></div>
			<div class='$class second theme-version-author-uri'>";

		$stylesheet = $theme->get_stylesheet();
		$theme_meta = array();

		if ( $theme->get( 'Version' ) ) {
			/* translators: %s: Theme version. */
			$theme_meta[] = sprintf( __( 'Version %s' ), $theme->display( 'Version' ) );
		}

		/* translators: %s: Theme author. */
		$theme_meta[] = sprintf( __( 'By %s' ), $theme->display( 'Author' ) );

		if ( $theme->get( 'ThemeURI' ) ) {
			/* translators: %s: Theme name. */
			$aria_label = sprintf( __( 'Visit %s homepage' ), $theme->display( 'Name' ) );

			$theme_meta[] = sprintf(
				'<a href="%s" aria-label="%s">%s</a>',
				$theme->display( 'ThemeURI' ),
				esc_attr( $aria_label ),
				__( 'Visit Theme Site' )
			);
		}

		/**
		 * Filters the array of row meta for each theme in the Multisite themes
		 * list table.
		 *
		 * @since 3.1.0
		 *
		 * @param string[] $theme_meta An array of the theme's metadata, including
		 *                             the version, author, and theme URI.
		 * @param string   $stylesheet Directory name of the theme.
		 * @param WP_Theme $theme      WP_Theme object.
		 * @param string   $status     Status of the theme.
		 */
		$theme_meta = apply_filters( 'theme_row_meta', $theme_meta, $stylesheet, $theme, $status );

		echo implode( ' | ', $theme_meta );

		echo '</div>';
	}