Help/About: Use the new /documentation/ URLs for HelpHub links in WordPress Admin.

As `https://wordpress.org/support/` was redirected to `https://wordpress.org/documentation/`, this changeset replaces various `/support/article/*` links with `/documentation/article/*` to avoid an extra redirect.

This also updates links to Support Forums by replacing `https://wordpress.org/support/` URLs with `https://wordpress.org/support/forums/`.

Props SergeyBiryukov, audrasjb, dhrupo, hasanmisbah, sakibmd, sabernhardt.
See #57726.


git-svn-id: https://develop.svn.wordpress.org/trunk@55412 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-admin/includes/file.php

@@ -323,7 +323,7 @@ function wp_print_file_editor_templates() {
 					printf(
 						/* translators: %s: Documentation URL. */
 						__( 'You need to make this file writable before you can save your changes. See <a href="%s">Changing File Permissions</a> for more information.' ),
-						__( 'https://wordpress.org/support/article/changing-file-permissions/' )
+						__( 'https://wordpress.org/documentation/article/changing-file-permissions/' )
 					);
 					?>
 				</p>
@@ -2124,7 +2124,7 @@ function WP_Filesystem( $args = false, $context = false, $allow_relaxed_file_own
  * The return value can be overridden by defining the `FS_METHOD` constant in `wp-config.php`,
  * or filtering via {@see 'filesystem_method'}.
  *
- * @link https://wordpress.org/support/article/editing-wp-config-php/#wordpress-upgrade-constants
+ * @link https://wordpress.org/documentation/article/editing-wp-config-php/#wordpress-upgrade-constants
  *
  * Plugins may define a custom transport handler, See WP_Filesystem().
  *