fix user manual link

Author: Krafting

source/hardware/controllers/pioneer_ddj_sx2.rst

@@ -5,7 +5,7 @@ The Pioneer DDJ-SX2 is a 4 deck all-in-one controller that provides intuitive co
 
 -  `Manufacturer’s product page <https://www.pioneerdj.com/en/product/dj-controllers/ddj-sx2/>`__
 -  `Forum thread <https://mixxx.discourse.group/t/pioneer-ddj-sx2-mapping/33575>`__
--  `User Manual <https://downloads.support.alphatheta.com/manuals/DDJ_SX2_DRI1228A_manual/?_ga=2.232319199.1969448112.1694516433-28385749.1688548883&page=1>`__
+-  `User Manual <https://downloads.support.alphatheta.com/manuals/DDJ_SX2_DRI1228A_manual/>`__
 -  `MIDI Messages Manual <https://downloads.support.alphatheta.com/software_info/dj-controllers/DDJ-SX2/DDJ-SX2_List_of_MIDI_Message_E.pdf>`__
 
 .. versionadded:: 2.6