doc: fix broken link to IgnoreHardwareSerialNumber in README.Windows

   URL for Microsoft documentation on IgnoreHardwareSerialNumber
   redirects to generic USB driver landing page instead of specific
   article. Update link to go to correct page.

Signed-off-by: N S <[email protected]>
Change-Id: Ifac6c730a1438242cdfe0a0a2867e043e03ceec7
Reviewed-on: https://review.openocd.org/c/openocd/+/7439
Tested-by: jenkins
Reviewed-by: Antonio Borneo <[email protected]>

Author: nlshipp

README.Windows

@@ -52,5 +52,5 @@ port depending on which application to use.
 
 For more information, see:
 
-  http://msdn.microsoft.com/en-us/library/windows/hardware/jj649944(v=vs.85).aspx
+  https://learn.microsoft.com/en-us/windows-hardware/drivers/usbcon/usb-device-specific-registry-settings
   http://www.ftdichip.com/Support/Knowledgebase/index.html?ignorehardwareserialnumber.htm