Site Health: Correct the anchor in object cache documentation link.

Follow-up to [57793], [58113], [58332].

Props jdy68, mohamedahamed, sabernhardt, jeffgreendesign, Presskopp, audrasjb, stevenlinx, JavierCasares, westonruter, SergeyBiryukov.
Fixes #65477, #58518.

git-svn-id: https://develop.svn.wordpress.org/trunk@62538 602fd350-edb4-49c9-b593-d223f7449a82

Author: SergeyBiryukov

src/wp-admin/includes/class-wp-site-health.php

@@ -2578,7 +2578,7 @@ public function get_test_persistent_object_cache() {
 		$action_url = apply_filters(
 			'site_status_persistent_object_cache_url',
 			/* translators: Localized Support reference. */
-			__( 'https://developer.wordpress.org/advanced-administration/performance/optimization/#persistent-object-cache' )
+			__( 'https://developer.wordpress.org/advanced-administration/performance/optimization/#object-caching' )
 		);
 
 		$result = array(