git: 4bfc1fb8620e - stable/13 - README.md: link to the list of supported platforms

The branch stable/13 has been updated by mhorne:

URL: https://cgit.FreeBSD.org/src/commit/?id=4bfc1fb8620e52a5d09a9fb2980ed62cfad6f76d

commit 4bfc1fb8620e52a5d09a9fb2980ed62cfad6f76d
Author:     Mitchell Horne <mhorne@FreeBSD.org>
AuthorDate: 2022-11-01 15:20:01 +0000
Commit:     Mitchell Horne <mhorne@FreeBSD.org>
CommitDate: 2022-11-14 17:04:12 +0000

    README.md: link to the list of supported platforms
    
    It answers a question that someone might have when faced with the source
    tree for the first time, and improves discoverability of the platforms
    page.
    
    Reviewed by:    emaste
    MFC after:      1 week
    Sponsored by:   The FreeBSD Foundation
    Differential Revision:  https://reviews.freebsd.org/D37179
    
    (cherry picked from commit c34ffd6c8b2859ef46873e6c3d6b3655da6db8c0)
---
 README.md | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/README.md b/README.md
index 10b0c3efa9aa..e4c56babb448 100644
--- a/README.md
+++ b/README.md
@@ -12,6 +12,9 @@ Additional copyright information also exists for some sources in this tree - ple
 The Makefile in this directory supports a number of targets for building components (or all) of the FreeBSD source tree.
 See build(7), config(8), [FreeBSD handbook on building userland](https://docs.freebsd.org/en/books/handbook/cutting-edge/#makeworld), and [Handbook for kernels](https://docs.freebsd.org/en/books/handbook/kernelconfig/) for more information, including setting make(1) variables.
 
+For information on the CPU architectures and platforms supported by FreeBSD, see the [FreeBSD
+website's Platforms page](https://www.freebsd.org/platforms/).
+
 Source Roadmap:
 ---------------
 | Directory | Description |