Index: wp-admin/includes/class-wp-site-health.php
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
--- wp-admin/includes/class-wp-site-health.php	(date 1557259254000)
+++ wp-admin/includes/class-wp-site-health.php	(date 1557343492000)
@@ -276,6 +276,13 @@
 	 * @return array The test result.
 	 */
 	public function get_test_plugin_version() {
+
+		if ( is_multisite() ){
+			$url = admin_url( 'network/plugins.php' );
+		} else {
+			$url = admin_url( 'plugins.php' );
+		}
+
 		$result = array(
 			'label'       => __( 'Your plugins are up to date' ),
 			'status'      => 'good',
@@ -289,7 +296,7 @@
 			),
 			'actions'     => sprintf(
 				'<p><a href="%s">%s</a></p>',
-				esc_url( admin_url( 'plugins.php' ) ),
+				esc_url( $url ),
 				__( 'Manage your plugins' )
 			),
 			'test'        => 'plugin_version',
@@ -340,7 +347,7 @@
 
 			$result['actions'] .= sprintf(
 				'<p><a href="%s">%s</a></p>',
-				esc_url( admin_url( 'plugins.php?plugin_status=upgrade' ) ),
+				esc_url( network_admin_url( 'plugins.php?plugin_status=upgrade' ) ),
 				__( 'Update your plugins' )
 			);
 		} else {