fix rpm spec file for packacing of apitool

[   62s] RPM build errors:
[   62s]     line 222: multiple %files for package 'osmo-remsim-server'

This fixes a bug introduced in I11d779f66833b5294ffeb422ce6b2a705719a899

Related: OS#5612
Change-Id: If8460b41f0e9fa988215acdf3bda829540c8d599
diff --git a/contrib/osmo-remsim.spec.in b/contrib/osmo-remsim.spec.in
index 150a8ec..0245577 100644
--- a/contrib/osmo-remsim.spec.in
+++ b/contrib/osmo-remsim.spec.in
@@ -202,7 +202,7 @@
 %{_bindir}/osmo-remsim-server
 %{_unitdir}/osmo-remsim-server.service
 
-%files -n osmo-remsim-server
+%files -n osmo-remsim-apitool
 %{_bindir}/osmo-remsim-apitool
 
 %files -n osmo-remsim-bankd