General: Make some inline comments more descriptive.

Props jorbin.
Fixes #51683.


git-svn-id: https://develop.svn.wordpress.org/trunk@49474 602fd350-edb4-49c9-b593-d223f7449a82

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

@@ -791,7 +791,7 @@ class WP_Query {
 			$qv['menu_order'] = absint( $qv['menu_order'] );
 		}
 
-		// Fairly insane upper bound for search string lengths.
+		// Fairly large, potentially too large, upper bound for search string lengths.
 		if ( ! is_scalar( $qv['s'] ) || ( ! empty( $qv['s'] ) && strlen( $qv['s'] ) > 1600 ) ) {
 			$qv['s'] = '';
 		}