[gcc r12-4635] doc: Convert mingw-w64.org links to https

[Gerald Pfeifer <gerald@gcc.gnu.org>]

https://gcc.gnu.org/g:47d4899183b7dc5f39b536045e2b0741d4482aee

commit r12-4635-g47d4899183b7dc5f39b536045e2b0741d4482aee
Author: Gerald Pfeifer <gerald@pfeifer.com>
Date:   Sat Oct 23 00:10:58 2021 +0200

    doc: Convert mingw-w64.org links to https
    
    gcc:
            * doc/install.texi (Binaries): Convert mingw-w64.org to https.
            (Specific): Ditto.

Diff:
---
 gcc/doc/install.texi | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/gcc/doc/install.texi b/gcc/doc/install.texi
index 7c775965964..38f96bf5a89 100644
--- a/gcc/doc/install.texi
+++ b/gcc/doc/install.texi
@@ -3473,7 +3473,7 @@ Microsoft Windows:
 The @uref{https://sourceware.org/cygwin/,,Cygwin} project;
 @item
 The @uref{https://osdn.net/projects/mingw/,,MinGW} and
-@uref{http://www.mingw-w64.org/,,mingw-w64} projects.
+@uref{https://www.mingw-w64.org/,,mingw-w64} projects.
 @end itemize
 
 @item
@@ -5080,7 +5080,7 @@ the Win32 subsystem that provides a subset of POSIX.
 
 @subheading Intel 64-bit versions
 GCC contains support for x86-64 using the mingw-w64
-runtime library, available from @uref{http://mingw-w64.org/doku.php}.
+runtime library, available from @uref{https://mingw-w64.org/doku.php}.
 This library should be used with the target triple x86_64-pc-mingw32.
 
 Presently Windows for Itanium is not supported.