Farewell to Bram and dedicate upcoming Vim 9.1 to him (#12749)

* Dedicate upcoming Vim 9.1 to Bram

Also replace in a few more places Brams email address and mention new
maintainers.

* Remove Bram from any Maintainer role

* runtime: Align Header

* it's mailing list not mailinglist
diff --git a/runtime/indent/vim.vim b/runtime/indent/vim.vim
index 7b45d41..97a4a36 100644
--- a/runtime/indent/vim.vim
+++ b/runtime/indent/vim.vim
@@ -2,8 +2,9 @@
 
 # Vim indent file
 # Language:	Vim script
-# Maintainer:	Bram Moolenaar <Bram@vim.org>
-# Last Change:	2023 Feb 02
+# Maintainer:	The Vim Project <https://github.com/vim/vim>
+# Last Change:	2023 Aug 10
+# Former Maintainer:	Bram Moolenaar <Bram@vim.org>
 
 # Only load this indent file when no other was loaded.
 if exists('b:did_indent')