docs(hooks): update comment_feed_* xrefs to class file

Update 5 cross-references for comment_feed_join,
comment_feed_where, comment_feed_groupby,
comment_feed_orderby, and comment_feed_limits from
`query.php` to `class-wp-query.php`.

Related to https://core.trac.wordpress.org/ticket/64224

Author: apermo

src/wp-includes/class-wp-query.php

@@ -3469,21 +3469,21 @@ public function get_posts() {
 		}
 
 		if ( ! empty( $this->posts ) && $this->is_comment_feed && $this->is_singular ) {
-			/** This filter is documented in wp-includes/query.php */
+			/** This filter is documented in wp-includes/class-wp-query.php */
 			$cjoin = apply_filters_ref_array( 'comment_feed_join', array( '', &$this ) );
 
-			/** This filter is documented in wp-includes/query.php */
+			/** This filter is documented in wp-includes/class-wp-query.php */
 			$cwhere = apply_filters_ref_array( 'comment_feed_where', array( "WHERE comment_post_ID = '{$this->posts[0]->ID}' AND comment_approved = '1'", &$this ) );
 
-			/** This filter is documented in wp-includes/query.php */
+			/** This filter is documented in wp-includes/class-wp-query.php */
 			$cgroupby = apply_filters_ref_array( 'comment_feed_groupby', array( '', &$this ) );
 			$cgroupby = ( ! empty( $cgroupby ) ) ? 'GROUP BY ' . $cgroupby : '';
 
-			/** This filter is documented in wp-includes/query.php */
+			/** This filter is documented in wp-includes/class-wp-query.php */
 			$corderby = apply_filters_ref_array( 'comment_feed_orderby', array( 'comment_date_gmt DESC', &$this ) );
 			$corderby = ( ! empty( $corderby ) ) ? 'ORDER BY ' . $corderby : '';
 
-			/** This filter is documented in wp-includes/query.php */
+			/** This filter is documented in wp-includes/class-wp-query.php */
 			$climits = apply_filters_ref_array( 'comment_feed_limits', array( 'LIMIT ' . get_option( 'posts_per_rss' ), &$this ) );
 
 			$comments_request = "SELECT {$wpdb->comments}.comment_ID FROM {$wpdb->comments} $cjoin $cwhere $cgroupby $corderby $climits";