vim-patch:ad2f6b6: runtime(keymap) Add forward slash (/) to russian-jcukenwin keymap

closes: vim/vim#16912

https://github.com/vim/vim/commit/ad2f6b66623f0a218ae1b2b18430e728070c8aca

Co-authored-by: Marat Amerov <maratamerov@gmail.com>

runtime/keymap/russian-jcukenwin.vim

@@ -4,6 +4,7 @@
 
 " Maintainer:   Artem Chuprina <ran@ran.pp.ru>
 " Last Changed: 2001 Jun 23
+" 2025 Mar 17 by The Vim Project (added /, #16912)
 
 " All characters are given literally, conversion to another encoding (e.g.,
 " UTF-8) should work.
@@ -85,3 +86,4 @@ $	;
 &	?
 /	.
 ?	,
+\|	/