Docs: Replace miscellaneous incorrect PHPDoc tags.

* `@contrib` is not a valid tag.
* `@origin` is not a valid tag.
* `@ref` is not a valid tag.
* `@blessed` is not a valid tag and doesn't convey any meaningful information.
* `@issue` is not a valid tag.

Reference: [https://developer.wordpress.org/coding-standards/inline-documentation-standards/php/#phpdoc-tags PHP Documentation Standards: PHPDoc Tags].

Follow-up to [8852], [34754], [38832], [43808].

Props jrf.
See #59651.

git-svn-id: https://develop.svn.wordpress.org/trunk@57108 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-admin/includes/class-wp-filesystem-ssh2.php

@@ -4,7 +4,7 @@
  *
  * To use this class you must follow these steps for PHP 5.2.6+
  *
- * @contrib http://kevin.vanzonneveld.net/techblog/article/make_ssh_connections_with_php/ - Installation Notes
+ * {@link http://kevin.vanzonneveld.net/techblog/article/make_ssh_connections_with_php/ - Installation Notes}
  *
  * Compile libssh2 (Note: Only 0.14 is officaly working with PHP 5.2.6+ right now, But many users have found the latest versions work)
  *