fixed install dir for kcm

kcm/CMakeLists.txt

@@ -8,7 +8,7 @@ add_library(kcm_fancontrol MODULE src/fancontrolkcm.cpp)
                                   
 target_link_libraries(kcm_fancontrol ${LIBRARIES})
 
-install(TARGETS kcm_fancontrol DESTINATION ${CMAKE_INSTALL_PLUGINDIR})
+install(TARGETS kcm_fancontrol DESTINATION "${CMAKE_INSTALL_PLUGINDIR}/kcms")
 install(FILES kcm_fancontrol.desktop DESTINATION ${SERVICES_INSTALL_DIR})
 
 kcoreaddons_desktop_to_json(kcm_fancontrol "kcm_fancontrol.desktop")