tweak rhel8+ cmake statement

kf5.spec

@@ -51,8 +51,8 @@ mkdir -p %{buildroot}%{_sysconfdir}/xdg/plasma-workspace/{env,shutdown}
 install -Dpm644 %{_sourcedir}/macros.kf5 %{buildroot}%{_rpmconfigdir}/macros.d/macros.kf5
 sed -i \
   -e "s|@@KF5_VERSION@@|%{version}|g" \
-%if 0%{?rhel} || 0%{?rhel} > 7
+%if 0%{?rhel} && 0%{?rhel} > 7
-  -e 's|rhel:%{__cmake3}|rhel:%{__cmake}|' \
+  -e 's|%{?fedora:%{__cmake}}%{?rhel:%{__cmake3}}|  %{__cmake}|' \
 %endif
   %{buildroot}%{_rpmconfigdir}/macros.d/macros.kf5