Docs: Correct type for `query_var` argument of `register_taxonomy()`.

Props juiiee8487, audrasjb.
Fixes #47877.
Built from https://develop.svn.wordpress.org/trunk@45797


git-svn-id: http://core.svn.wordpress.org/trunk@45608 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/taxonomy.php

@@ -396,7 +396,7 @@ function is_taxonomy_hierarchical( $taxonomy ) {
  *         @type bool   $hierarchical Either hierarchical rewrite tag or not. Default false.
  *         @type int    $ep_mask      Assign an endpoint mask. Default `EP_NONE`.
  *     }
- *     @type string        $query_var             Sets the query var key for this taxonomy. Default `$taxonomy` key. If
+ *     @type string|bool   $query_var             Sets the query var key for this taxonomy. Default `$taxonomy` key. If
  *                                                false, a taxonomy cannot be loaded at `?{query_var}={term_slug}`. If a
  *                                                string, the query `?{query_var}={term_slug}` will be valid.
  *     @type callable      $update_count_callback Works much like a hook, in that it will be called when the count is

wp-includes/version.php

@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.3-alpha-45796';
+$wp_version = '5.3-alpha-45797';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.