Use version 40~beta instead of 40.0~beta

This makes it easier to map it to upstream version ('~' just replaced with
a '.').

The previous release hasn't gone out to a compose so it's fine to go
backwards in EVR.

gnome-settings-daemon.spec

@@ -7,14 +7,16 @@
 %global libgweather_version 3.9.5
 %global geoclue_version 2.3.1
 
+%global tarball_version %%(echo %{version} | tr '~' '.')
+
 Name:           gnome-settings-daemon
-Version:        40.0~beta
+Version:        40~beta
 Release:        1%{?dist}
 Summary:        The daemon sharing settings from GNOME to GTK+/KDE applications
 
 License:        GPLv2+
 URL:            https://download.gnome.org/sources/%{name}
-Source0:        https://download.gnome.org/sources/%{name}/40/%{name}-40.beta.tar.xz
+Source0:        https://download.gnome.org/sources/%{name}/40/%{name}-%{tarball_version}.tar.xz
 Source1:        org.gnome.settings-daemon.plugins.power.gschema.override
 
 BuildRequires:  meson >= 0.44.0
@@ -85,7 +87,7 @@ The %{name}-devel package contains libraries and header files for
 developing applications that use %{name}.
 
 %prep
-%autosetup -p1 -n %{name}-40.beta
+%autosetup -p1 -n %{name}-%{tarball_version}
 
 %build
 %meson
@@ -191,10 +193,10 @@ mkdir $RPM_BUILD_ROOT%{_libdir}/gnome-settings-daemon-40.0/gtk-modules
 %{_libdir}/pkgconfig/gnome-settings-daemon.pc
 
 %changelog
-* Mon Feb 15 2021 Florian Müllner <fmuellner@redhat.com> - 40.0~beta
+* Mon Feb 15 2021 Florian Müllner <fmuellner@redhat.com> - 40~beta-1
 - Update to 40.beta
 
-* Mon Feb 15 2021 Florian Müllner <fmuellner@redhat.com> - 40.0~alpha.1
+* Mon Feb 15 2021 Florian Müllner <fmuellner@redhat.com> - 40~alpha.1-1
 - Update to 40.alpha.1
 
 * Tue Jan 26 2021 Fedora Release Engineering <releng@fedoraproject.org> - 3.38.1-2