git: f44280bf5fbb - main - libz: update the upgrade instructions to reflect reality

The branch main has been updated by delphij:

URL: https://cgit.FreeBSD.org/src/commit/?id=f44280bf5fbb0599871612e9286407981ad4aaa3

commit f44280bf5fbb0599871612e9286407981ad4aaa3
Author:     Xin LI <delphij@FreeBSD.org>
AuthorDate: 2022-04-30 23:57:54 +0000
Commit:     Xin LI <delphij@FreeBSD.org>
CommitDate: 2022-04-30 23:57:54 +0000

    libz: update the upgrade instructions to reflect reality
---
 lib/libz/FREEBSD-upgrade | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/lib/libz/FREEBSD-upgrade b/lib/libz/FREEBSD-upgrade
index 203ae5c220c2..1b034f86f211 100644
--- a/lib/libz/FREEBSD-upgrade
+++ b/lib/libz/FREEBSD-upgrade
@@ -1,11 +1,9 @@
-$FreeBSD$
-
 Original distribution from http://zlib.net/.  Currently, only trivial
-changes were made to support build of libstand and to suppress certain
+changes were made to support build of libsa and to suppress certain
 compiler warnings, we upstream our local changes whenever they would
 benefit other consumers.
 
-To Update:
+To update:
   1) Unpack vendor sources into a clean directory.
   2) Import onto the vendor area.
   3) Merge the vendor tree to sys/contrib/zlib, which contains a stripped down