[Minor] Fix lua-fun installation path

CMakeLists.txt

@@ -1326,8 +1326,6 @@ FOREACH(LUA_PLUGIN ${LUA_PLUGINS})
 	INSTALL(FILES "src/plugins/lua/${LUA_PLUGIN}" DESTINATION ${PLUGINSDIR}/lua/${_rp})
 ENDFOREACH(LUA_PLUGIN)
 
-# Install lua fun library
-INSTALL(FILES "contrib/lua-fun/fun.lua" DESTINATION ${LUALIBDIR}/lua)
 
 # Install TLD list
 INSTALL(FILES "contrib/publicsuffix/effective_tld_names.dat" DESTINATION
@@ -1351,6 +1349,9 @@ FOREACH(LUA_LIB ${LUA_LIBS})
 	INSTALL(FILES "lualib/${LUA_LIB}" DESTINATION ${LUALIBDIR}/${_rp})
 ENDFOREACH(LUA_LIB)
 
+# Install lua fun library
+INSTALL(FILES "contrib/lua-fun/fun.lua" DESTINATION ${LUALIBDIR})
+
 # systemd unit
 IF(CMAKE_SYSTEM_NAME STREQUAL "Linux" AND WANT_SYSTEMD_UNITS MATCHES "ON")
 	INSTALL(FILES "rspamd.service" DESTINATION ${SYSTEMDDIR})