patch 9.1.0000: Vim 9.1 release

Problem:  Need a new release
Solution: Release Vim 9.1

Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/READMEdir/README_mac.txt b/READMEdir/README_mac.txt
index fdfcbe1..ff7ef5c 100644
--- a/READMEdir/README_mac.txt
+++ b/READMEdir/README_mac.txt
@@ -1,4 +1,4 @@
-README_mac.txt for version 9.0 of Vim: Vi IMproved.
+README_mac.txt for version 9.1 of Vim: Vi IMproved.
 
 This file explains the installation of Vim on MacOS systems.
 See "README.txt" for general information about Vim.