Docs: Improve set_query_var() inline docs.

Makes the inline docs for set_query_var() consistent with the inline docs for
get_query_var().

See #42783.
Props stevenlinx, markparnell.

Built from https://develop.svn.wordpress.org/trunk@49094


git-svn-id: http://core.svn.wordpress.org/trunk@48856 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/query.php

@@ -61,7 +61,7 @@ function get_queried_object_id() {
 }
 
 /**
- * Set query variable.
+ * Set variable in the WP_Query class.
  *
  * @since 2.2.0
  *

wp-includes/version.php

@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.6-alpha-49093';
+$wp_version = '5.6-alpha-49094';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.