Update kdenliveeffectscategory.rc

data/kdenliveeffectscategory.rc

 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE kpartgui SYSTEM "kpartgui.dtd">
 <data name="effects" version="0">
-  <group list="chroma,frei0r.alpha0ps,frei0r.alphagrad,frei0r.alphaspot,frei0r.transparency,frei0r.mask0mate,rotoscoping,frei0r.keyspillm0pup,avfilter.despill,obscure,autotrack_rectangle,frei0r.bluescreen0r,lumakey,shape,spot_remover,frei0r.select0r,frei0r.spillsupress,frei0r.bgsubtract0r,opencv.tracker">
+  <group list="chroma,frei0r.alpha0ps,frei0r.alphagrad,frei0r.alphaspot,frei0r.transparency,frei0r.mask0mate,rotoscoping,frei0r.keyspillm0pup,avfilter.despill,obscure,autotrack_rectangle,frei0r.bluescreen0r,lumakey,shape,spot_remover,frei0r.select0r,frei0r.spillsupress,frei0r.bgsubtract0r,opencv.tracker,strobe">
     <text>Alpha, Mask and Keying</text>
   </group>
 <group list="boxblur,frei0r.squareblur,avfilter.avgblur,avfilter.gblur,avfilter.smartblur,avfilter.boxblur,avfilter.unsharp,avfilter.sab">