patch 9.1.1014: Vim9: variable not found in transitive import

Problem:  Vim9: variable not found in transitive import
Solution: Allow nested import (Hirohito Higashi)

fixe: #16379
closes: #16440

Signed-off-by: Hirohito Higashi <h.east.727@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/runtime/doc/options.txt b/runtime/doc/options.txt
index 2f64ba3..018f10d 100644
--- a/runtime/doc/options.txt
+++ b/runtime/doc/options.txt
@@ -1,4 +1,4 @@
-*options.txt*	For Vim version 9.1.  Last change: 2025 Jan 12
+*options.txt*	For Vim version 9.1.  Last change: 2025 Jan 14
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -5582,6 +5582,7 @@
 	command recursion, see |E169|.
 	See also |:function|.
 	Also used for maximum depth of callback functions.
+	Also used for maximum depth of import.  See |:import-cycle|.
 
 						*'maxmapdepth'* *'mmd'* *E223*
 'maxmapdepth' 'mmd'	number	(default 1000)