Administration: Consistently escape network_admin_url() links.

Follow-up to [51177].

Props chintan1896, mukesh27.
Fixes #53459.

git-svn-id: https://develop.svn.wordpress.org/trunk@51189 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-admin/includes/template.php

@@ -972,7 +972,7 @@ function wp_import_upload_form( $action ) {
 		?>
 		<div class="error"><p><?php _e( 'Before you can upload your import file, you will need to fix the following error:' ); ?></p>
 		<p><strong><?php echo $upload_dir['error']; ?></strong></p></div>
-								<?php
+		<?php
 	else :
 		?>
 <form enctype="multipart/form-data" id="import-upload-form" method="post" class="wp-upload-form" action="<?php echo esc_url( wp_nonce_url( $action, 'import-upload' ) ); ?>">