[newlib-cygwin/main] Cygwin: doc: Fix doubled .html typo in package server link

[Jon Turney]

https://sourceware.org/git/gitweb.cgi?p=newlib-cygwin.git;h=2f965a5c9e05a872707a9593e8b884deae15f436

commit 2f965a5c9e05a872707a9593e8b884deae15f436
Author: Jon Turney <jon.turney@dronecode.org.uk>
Date:   Fri Sep 26 14:22:35 2025 +0100

    Cygwin: doc: Fix doubled .html typo in package server link

Diff:
---
 winsup/doc/faq-setup.xml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/winsup/doc/faq-setup.xml b/winsup/doc/faq-setup.xml
index 17b11c9fb..2d138020b 100644
--- a/winsup/doc/faq-setup.xml
+++ b/winsup/doc/faq-setup.xml
@@ -668,7 +668,7 @@ That's all there is to it.
 this purpose.  See <ulink url="http://rsync.samba.org/"/>,
 <ulink url="http://www.gnu.org/software/wget/"/> for utilities that can do this for you.
 For more information on setting up a custom Cygwin package server, see
-the <ulink url="https://cygwin.com/package-server.html.html">Cygwin Package Server page</ulink>.
+the <ulink url="https://cygwin.com/package-server.html">Cygwin Package Server page</ulink>.
 
 </para>
 </answer></qandaentry>