update image magick config

MediaBrowser.Server.Mono/ImageMagickSharp.dll.config

@@ -1,4 +1,4 @@
 <configuration>
-  <dllmap dll="CORE_RL_Wand_.dll" target="CORE_RL_Wand_.so" os="linux"/>
+  <dllmap dll="CORE_RL_Wand_.dll" target="libMagickWand-6.Q16.so" os="linux"/>
   <dllmap dll="CORE_RL_Wand_.dll" target="./MediaInfo/osx/libmediainfo.dylib" os="osx"/>
 </configuration>