subprojects: Use the correct .git suffix in the repository URLs

This avoids the warnings à la:
"warning: redirecting to https://gitlab.com/qemu-project/xyz.git/"

Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>

subprojects/berkeley-softfloat-3.wrap

@@ -1,5 +1,5 @@
 [wrap-git]
-url = https://gitlab.com/qemu-project/berkeley-softfloat-3
+url = https://gitlab.com/qemu-project/berkeley-softfloat-3.git
 revision = b64af41c3276f97f0e181920400ee056b9c88037
 patch_directory = berkeley-softfloat-3
 depth = 1

subprojects/berkeley-testfloat-3.wrap

@@ -1,5 +1,5 @@
 [wrap-git]
-url = https://gitlab.com/qemu-project/berkeley-testfloat-3
+url = https://gitlab.com/qemu-project/berkeley-testfloat-3.git
 revision = e7af9751d9f9fd3b47911f51a5cfd08af256a9ab
 patch_directory = berkeley-testfloat-3
 depth = 1

subprojects/slirp.wrap

@@ -1,5 +1,5 @@
 [wrap-git]
-url = https://gitlab.freedesktop.org/slirp/libslirp
+url = https://gitlab.freedesktop.org/slirp/libslirp.git
 revision = 26be815b86e8d49add8c9a8b320239b9594ff03d
 
 [provide]