don't use _kde4_ macro for kde3 paths

mostly to make it clear that it's not for kde4 really

khelpcenter.spec

@@ -60,10 +60,10 @@ make %{?_smp_mflags} -C %{_target_platform}
 make install/fast DESTDIR=%{buildroot} -C %{_target_platform}
 
 # Provide khelpcenter service for KDE 3 applications
-mkdir -p %{buildroot}%{_kde4_datadir}/services
+mkdir -p %{buildroot}%{_datadir}/services
 cp -alf \
   %{buildroot}%{_datadir}/kservices5/khelpcenter.desktop \
-  %{buildroot}%{_kde4_datadir}/services/
+  %{buildroot}%{_datadir}/services/
 
 
 %check
@@ -84,7 +84,7 @@ desktop-file-validate %{buildroot}%{_datadir}/applications/org.kde.Help.desktop
 %{_datadir}/applications/org.kde.Help.desktop
 %{_datadir}/config.kcfg/khelpcenter.kcfg
 %{_datadir}/kservices5/khelpcenter.desktop
-%{_kde4_datadir}/services/khelpcenter.desktop
+%{_datadir}/services/khelpcenter.desktop
 %{_kde4_datadir}/kde4/services/khelpcenter.desktop
 %lang(en) %{_kf5_docdir}/HTML/en/fundamentals/
 %lang(en) %{_kf5_docdir}/HTML/en/khelpcenter/